| argentina | catamarca province | alnus acuminata | species | 0 | 2 |
| argentina | jujuy province | alnus acuminata | species | 0 | 1 |
| argentina | tucuman province | alnus acuminata | species | 0 | 2 |
| austria | | alnus alnobetula | species | 2 | 0 |
| austria | | betula nana | species | 2 | 0 |
| austria | | betula pubescens | species | 5 | 0 |
| austria | | betula pubescens x betula nana | species | 2 | 0 |
| belarus | | betula humilis | species | 23 | 0 |
| belarus | | betula pendula var. carelica | varietas | 5 | 0 |
| belarus | | betula pubescens | species | 3 | 0 |
| belgium | | betula nana | species | 1 | 0 |
| belgium | | corylus colurna | species | 1 | 0 |
| belgium | | ostrya carpinifolia | species | 1 | 0 |
| brazil | | betula sp. rp-2014 | species | 3 | 0 |
| canada | | alnus rubra | species | 4 | 0 |
| canada | | betula alleghaniensis | species | 2 | 0 |
| canada | | betula glandulosa | species | 2 | 0 |
| canada | | betula michauxii | species | 1 | 0 |
| canada | | betula papyrifera | species | 1 | 0 |
| canada | | betula pumila | species | 2 | 0 |
| canada | british columbia | alnus alnobetula | species | 5 | 0 |
| canada | british columbia | alnus incana | species | 3 | 0 |
| canada | british columbia | alnus rubra | species | 6 | 0 |
| canada | british columbia | betula glandulosa | species | 1 | 0 |
| canada | british columbia | betula nana | species | 1 | 0 |
| canada | british columbia | betula occidentalis | species | 4 | 0 |
| canada | british columbia | betula papyrifera | species | 1 | 0 |
| canada | british columbia | betula pendula | species | 1 | 0 |
| canada | british columbia | betula pubescens | species | 1 | 0 |
| canada | british columbia | betula pumila | species | 1 | 0 |
| canada | british columbia | corylus avellana | species | 6 | 0 |
| canada | british columbia | corylus cornuta | species | 3 | 0 |
| canada | manitoba | alnus alnobetula | species | 2 | 0 |
| canada | manitoba | betula neoalaskana | species | 2 | 0 |
| canada | manitoba | betula occidentalis | species | 2 | 0 |
| canada | newfoundland and labrador | alnus alnobetula | species | 4 | 0 |
| canada | newfoundland and labrador | betula glandulosa | species | 2 | 0 |
| canada | newfoundland and labrador | betula minor | species | 2 | 0 |
| canada | newfoundland and labrador | betula nana | species | 1 | 0 |
| canada | northwest territories | alnus alnobetula subsp. crispa | subspecies | 4 | 0 |
| canada | northwest territories | betula glandulosa | species | 6 | 0 |
| canada | northwest territories | betula neoalaskana | species | 4 | 0 |
| canada | northwest territories | betula pumila var. glandulifera | varietas | 2 | 0 |
| canada | nova scotia | alnus incana | species | 2 | 0 |
| canada | nova scotia | alnus serrulata | species | 2 | 0 |
| canada | nova scotia | betula michauxii | species | 2 | 0 |
| canada | nunavut | alnus alnobetula subsp. crispa | subspecies | 2 | 0 |
| canada | nunavut | betula glandulosa | species | 10 | 0 |
| canada | ontario | alnus alnobetula | species | 3 | 0 |
| canada | ontario | alnus glutinosa | species | 8 | 0 |
| canada | ontario | betula alleghaniensis | species | 5 | 0 |
| canada | ontario | betula minor | species | 2 | 0 |
| canada | ontario | betula papyrifera | species | 5 | 1 |
| canada | ontario | betula pumila | species | 3 | 0 |
| canada | ontario | carpinus caroliniana | species | 1 | 0 |
| canada | ontario | corylus americana | species | 5 | 0 |
| canada | ontario | corylus cornuta | species | 9 | 0 |
| canada | ontario | ostrya virginiana | species | 12 | 0 |
| canada | quebec | alnus incana subsp. rugosa | subspecies | 1 | 0 |
| canada | quebec | betula alleghaniensis | species | 6 | 0 |
| canada | quebec | betula cordifolia | species | 3 | 0 |
| canada | quebec | betula lenta | species | 4 | 0 |
| canada | quebec | betula nana | species | 12 | 0 |
| canada | quebec | betula papyrifera | species | 4 | 2 |
| canada | quebec | betula populifolia | species | 5 | 0 |
| canada | quebec | carpinus caroliniana | species | 1 | 0 |
| canada | quebec | corylus americana | species | 2 | 0 |
| canada | quebec | corylus cornuta | species | 2 | 0 |
| canada | quebec | ostrya virginiana | species | 4 | 0 |
| canada | yukon | betula nana | species | 4 | 0 |
| canada | yukon | betula nana subsp. exilis | subspecies | 4 | 0 |
| canada | yukon | betula neoalaskana | species | 2 | 0 |
| canada | yukon | betula occidentalis | species | 2 | 0 |
| canada | yukon | betula papyrifera | species | 3 | 0 |
| china | | alnus alnobetula | species | 1 | 0 |
| china | | alnus cremastogyne | species | 5 | 0 |
| china | | alnus ferdinandi-coburgii | species | 3 | 0 |
| china | | alnus formosana | species | 8 | 0 |
| china | | alnus glutinosa | species | 5 | 0 |
| china | | alnus hirsuta | species | 1 | 0 |
| china | | alnus japonica | species | 1 | 0 |
| china | | alnus nepalensis | species | 3 | 0 |
| china | | alnus trabeculosa | species | 3 | 0 |
| china | | betula alnoides | species | 314 | 0 |
| china | | betula ermanii | species | 2 | 0 |
| china | | betula fruticosa | species | 2 | 0 |
| china | | betula luminifera | species | 5 | 0 |
| china | | betula microphylla | species | 2 | 0 |
| china | | betula ovalifolia | species | 2 | 0 |
| china | | betula platyphylla | species | 12 | 0 |
| china | | betula schmidtii | species | 4 | 0 |
| china | | betula utilis | species | 6 | 0 |
| china | | betula utilis subsp. albosinensis | species | 4 | 0 |
| china | | betulaceae sp. cx-2015 | species | 10 | 0 |
| china | | carpinus cordata | species | 2 | 0 |
| china | | carpinus laxiflora | species | 1 | 0 |
| china | | carpinus londoniana | species | 2 | 0 |
| china | | carpinus monbeigiana | species | 6 | 0 |
| china | | carpinus polyneura | species | 9 | 0 |
| china | | carpinus pubescens | species | 3 | 0 |
| china | | carpinus sp. bop010436 | species | 1 | 0 |
| china | | carpinus tschonoskii | species | 2 | 0 |
| china | | carpinus turczaninovii | species | 1 | 0 |
| china | | corylus avellana | species | 134 | 0 |
| china | | corylus chinensis | species | 1 | 0 |
| china | | corylus ferox | species | 6 | 0 |
| china | | corylus heterophylla | species | 2 | 0 |
| china | | ostryopsis davidiana | species | 4 | 0 |
| china | beijing | betula alnoides | species | 3 | 0 |
| china | beijing | carpinus sp. bop010436 | species | 3 | 0 |
| china | beijing | carpinus turczaninovii | species | 4 | 0 |
| china | beijing | corylus heterophylla | species | 14 | 0 |
| china | chongqing | alnus cremastogyne | species | 1 | 0 |
| china | guangdong | betula austrosinensis | species | 4 | 0 |
| china | guangxi | alnus nepalensis | species | 1 | 0 |
| china | guizhou | alnus ferdinandi-coburgii | species | 1 | 0 |
| china | guizhou | alnus nepalensis | species | 1 | 0 |
| china | hebei | betula nigra | species | 1 | 0 |
| china | hebei | betula platyphylla | species | 0 | 1 |
| china | hebei | corylus heterophylla | species | 3 | 0 |
| china | heilongjiang | betula davurica | species | 2 | 0 |
| china | henan | alnus trabeculosa | species | 1 | 0 |
| china | hunan | alnus trabeculosa | species | 2 | 0 |
| china | inner mongolia | betula ermanii | species | 0 | 1 |
| china | inner mongolia | betula platyphylla | species | 0 | 1 |
| china | jilin | alnus hirsuta | species | 3 | 0 |
| china | liaoning | betula platyphylla | species | 0 | 1 |
| china | shaanxi | ostryopsis nobilis | species | 8 | 0 |
| china | shandong | alnus japonica | species | 1 | 0 |
| china | shanxi | betula platyphylla | species | 0 | 1 |
| china | sichuan | alnus cremastogyne | species | 2 | 0 |
| china | sichuan | alnus ferdinandi-coburgii | species | 3 | 0 |
| china | sichuan | alnus formosana | species | 3 | 0 |
| china | sichuan | carpinus fangiana | species | 1 | 0 |
| china | sichuan | carpinus laxiflora | species | 1 | 0 |
| china | tibet | ostryopsis nobilis | species | 3 | 0 |
| china | yunnan | alnus cremastogyne | species | 1 | 0 |
| china | yunnan | alnus nepalensis | species | 7 | 2 |
| china | yunnan | betula alnoides | species | 3 | 0 |
| china | yunnan | carpinus londoniana | species | 1 | 0 |
| china | yunnan | carpinus pubescens | species | 1 | 0 |
| china | yunnan | ostryopsis intermedia | species | 2 | 0 |
| china | yunnan | ostryopsis nobilis | species | 16 | 0 |
| china | zhejiang | alnus cremastogyne | species | 1 | 0 |
| china | zhejiang | carpinus cordata | species | 1 | 0 |
| china | zhejiang | carpinus londoniana | species | 2 | 0 |
| china | zhejiang | carpinus putoensis | species | 1 | 0 |
| china | zhejiang | carpinus tientaiensis | species | 1 | 0 |
| china | zhejiang | ostrya rehderiana | species | 2 | 0 |
| cyprus | | alnus orientalis | species | 4 | 0 |
| denmark | | betula pendula | species | 1 | 0 |
| denmark | | carpinus betulus | species | 1 | 0 |
| finland | | alnus glutinosa | species | 1 | 0 |
| finland | | alnus incana | species | 4 | 0 |
| finland | | betula nana | species | 6 | 0 |
| finland | | betula pendula | species | 70 | 0 |
| finland | | betula pubescens | species | 7 | 0 |
| finland | | corylus avellana | species | 1 | 0 |
| finland | uusimaa region | betula pendula | species | 6 | 0 |
| france | | alnus alnobetula subsp. alnobetula | subspecies | 1 | 0 |
| france | | alnus cordata | species | 7 | 0 |
| france | | alnus glutinosa | species | 4 | 0 |
| france | | alnus incana | species | 1 | 0 |
| france | | carpinus betulus | species | 3 | 0 |
| france | | corylus avellana | species | 3 | 0 |
| france | | uncultured carpinus betulus from ectomycorrhiza | species | 1 | 0 |
| france | | uncultured corylus avellana from ectomycorrhiza | species | 1 | 0 |
| france | corse region | alnus cordata | species | 5 | 0 |
| france | pays de la loire region | alnus alnobetula subsp. suaveolens | subspecies | 5 | 0 |
| france | rhone-alpes region | alnus glutinosa | species | 4 | 0 |
| georgia | | alnus glutinosa subsp. barbata | subspecies | 50 | 0 |
| germany | | alnus glutinosa | species | 1 | 0 |
| germany | | alnus incana | species | 2 | 0 |
| germany | | alnus incana subsp. incana | subspecies | 1 | 0 |
| germany | | betula alleghaniensis | species | 11 | 0 |
| germany | | betula humilis | species | 3 | 0 |
| germany | | betula nigra | species | 8 | 0 |
| germany | | betula pendula | species | 1 | 0 |
| germany | | corylus avellana | species | 2 | 0 |
| germany | bavaria | betula grossa | species | 1 | 0 |
| germany | bavaria | betula nana | species | 12 | 0 |
| germany | bavaria | betula pendula | species | 2 | 0 |
| germany | hamburg | betula medwediewii | species | 1 | 0 |
| germany | hamburg | betula utilis | species | 1 | 0 |
| germany | hesse | betula alleghaniensis | species | 13 | 0 |
| germany | hesse | betula globispica | species | 1 | 0 |
| germany | hesse | betula lenta | species | 24 | 0 |
| germany | hesse | betula maximowicziana | species | 5 | 0 |
| germany | hesse | betula medwediewii | species | 4 | 0 |
| germany | lower saxony | betula davurica | species | 4 | 0 |
| germany | lower saxony | betula tianschanica | species | 1 | 0 |
| germany | lower saxony | betula utilis | species | 1 | 0 |
| germany | north rhine-westphalia | betula alleghaniensis | species | 2 | 0 |
| germany | north rhine-westphalia | betula grossa | species | 1 | 0 |
| germany | north rhine-westphalia | betula lenta | species | 1 | 0 |
| germany | north rhine-westphalia | betula medwediewii | species | 1 | 0 |
| germany | north rhine-westphalia | corylus avellana | species | 0 | 2 |
| germany | saxony | betula lenta | species | 1 | 0 |
| germany | saxony | betula maximowicziana | species | 11 | 0 |
| germany | schleswig-holstein | betula utilis | species | 3 | 0 |
| germany | schleswig-holstein | betula utilis subsp. jacquemontii | subspecies | 6 | 0 |
| greenland | | betula minor | species | 4 | 0 |
| greenland | | betula nana | species | 16 | 0 |
| iceland | | betula nana | species | 4 | 0 |
| iceland | | betula pubescens | species | 7 | 0 |
| india | | alnus glutinosa | species | 3 | 0 |
| india | | alnus incana | species | 1 | 0 |
| india | | alnus nepalensis | species | 1 | 0 |
| india | | alnus nitida | species | 2 | 0 |
| iran | north khorasan province | betula pendula | species | 1 | 0 |
| ireland | | alnus glutinosa | species | 2 | 0 |
| ireland | | betula pubescens | species | 12 | 0 |
| italy | | corylus avellana | species | 395 | 0 |
| italy | campania region | corylus avellana | species | 0 | 1 |
| italy | lazio region | corylus avellana | species | 0 | 1 |
| italy | piemonte region | corylus avellana | species | 0 | 1 |
| italy | sardinia autonomous region | corylus avellana | species | 0 | 1 |
| italy | sicily autonomous region | corylus avellana | species | 0 | 1 |
| italy | south tyrol autonomous region | betula pendula | species | 8 | 0 |
| italy | umbria region | alnus glutinosa | species | 3 | 0 |
| italy | umbria region | corylus avellana | species | 3 | 0 |
| japan | | alnus firma | species | 10 | 0 |
| japan | | alnus formosana | species | 1 | 0 |
| japan | | alnus hirsuta | species | 5 | 0 |
| japan | | alnus japonica | species | 9 | 0 |
| japan | | alnus matsumurae | species | 5 | 0 |
| japan | | alnus pendula | species | 4 | 0 |
| japan | | alnus serrulatoides | species | 6 | 0 |
| japan | | alnus sieboldiana | species | 1 | 0 |
| japan | | alnus trabeculosa | species | 1 | 0 |
| japan | | betula chichibuensis | species | 16 | 0 |
| japan | | betula ermanii | species | 9 | 0 |
| japan | | betula grossa | species | 1 | 0 |
| japan | | betula maximowicziana | species | 3 | 0 |
| japan | | betula platyphylla var. japonica | varietas | 4 | 0 |
| japan | | carpinus japonica | species | 1 | 0 |
| japan | | carpinus laxiflora | species | 16 | 0 |
| japan | | carpinus tschonoskii | species | 1 | 0 |
| japan | | corylus sieboldiana var. sieboldiana | varietas | 1 | 0 |
| japan | aichi prefecture | alnus firma | species | 10 | 0 |
| japan | aichi prefecture | alnus japonica | species | 16 | 0 |
| japan | aichi prefecture | alnus sieboldiana | species | 2 | 0 |
| japan | aichi prefecture | alnus trabeculosa | species | 39 | 0 |
| japan | aomori prefecture | alnus hirsuta | species | 1 | 0 |
| japan | aomori prefecture | alnus maximowiczii | species | 1 | 0 |
| japan | aomori prefecture | carpinus laxiflora | species | 5 | 0 |
| japan | aomori prefecture | corylus sieboldiana | species | 1 | 0 |
| japan | ehime prefecture | alnus firma | species | 3 | 0 |
| japan | ehime prefecture | alnus sieboldiana | species | 1 | 0 |
| japan | ehime prefecture | betula grossa | species | 1 | 0 |
| japan | ehime prefecture | betula sp. ym4252 | species | 1 | 0 |
| japan | ehime prefecture | carpinus laxiflora | species | 3 | 0 |
| japan | fukuoka prefecture | alnus hirsuta | species | 1 | 0 |
| japan | fukushima prefecture | alnus hirsuta | species | 1 | 0 |
| japan | fukushima prefecture | alnus matsumurae | species | 2 | 0 |
| japan | fukushima prefecture | alnus pendula | species | 1 | 0 |
| japan | fukushima prefecture | betula grossa | species | 2 | 0 |
| japan | fukushima prefecture | betula maximowicziana | species | 2 | 0 |
| japan | fukushima prefecture | betula platyphylla var. japonica | varietas | 1 | 0 |
| japan | gifu prefecture | alnus hirsuta | species | 4 | 0 |
| japan | gifu prefecture | alnus hirsuta var. sibirica | varietas | 1 | 0 |
| japan | gifu prefecture | alnus serrulatoides | species | 4 | 0 |
| japan | gifu prefecture | alnus trabeculosa | species | 10 | 0 |
| japan | gifu prefecture | betula costata | species | 6 | 0 |
| japan | gifu prefecture | betula grossa | species | 1 | 0 |
| japan | gifu prefecture | betula maximowicziana | species | 1 | 0 |
| japan | gifu prefecture | betula platyphylla var. japonica | varietas | 1 | 0 |
| japan | gifu prefecture | carpinus laxiflora | species | 1 | 0 |
| japan | gifu prefecture | carpinus tschonoskii | species | 3 | 0 |
| japan | gifu prefecture | corylus sieboldiana var. sieboldiana | varietas | 1 | 0 |
| japan | gunma prefecture | alnus hirsuta | species | 1 | 0 |
| japan | gunma prefecture | alnus matsumurae | species | 1 | 0 |
| japan | gunma prefecture | betula grossa | species | 1 | 0 |
| japan | gunma prefecture | betula maximowicziana | species | 1 | 0 |
| japan | gunma prefecture | betula platyphylla var. japonica | varietas | 1 | 0 |
| japan | gunma prefecture | carpinus laxiflora | species | 2 | 0 |
| japan | gunma prefecture | carpinus tschonoskii | species | 1 | 0 |
| japan | gunma prefecture | corylus sieboldiana var. sieboldiana | varietas | 1 | 0 |
| japan | gunma prefecture | ostrya japonica | species | 1 | 0 |
| japan | hiroshima prefecture | alnus hirsuta var. sibirica | varietas | 2 | 0 |
| japan | hiroshima prefecture | corylus sieboldiana var. sieboldiana | varietas | 2 | 0 |
| japan | hiroshima prefecture | ostrya japonica | species | 1 | 0 |
| japan | hokkaido prefecture | alnus hirsuta | species | 4 | 0 |
| japan | hokkaido prefecture | alnus japonica | species | 2 | 0 |
| japan | hokkaido prefecture | alnus maximowiczii | species | 4 | 0 |
| japan | hokkaido prefecture | betula apoiensis | species | 22 | 0 |
| japan | hokkaido prefecture | betula davurica | species | 1 | 0 |
| japan | hokkaido prefecture | betula ermanii | species | 13 | 2 |
| japan | hokkaido prefecture | betula maximowicziana | species | 5 | 0 |
| japan | hokkaido prefecture | betula ovalifolia | species | 19 | 0 |
| japan | hokkaido prefecture | betula platyphylla | species | 2 | 3 |
| japan | hokkaido prefecture | betula platyphylla var. japonica | varietas | 5 | 0 |
| japan | hokkaido prefecture | corylus sieboldiana var. sieboldiana | varietas | 1 | 0 |
| japan | hokkaido prefecture | ostrya japonica | species | 1 | 0 |
| japan | ibaraki prefecture | alnus hirsuta | species | 4 | 0 |
| japan | ibaraki prefecture | alnus japonica | species | 28 | 0 |
| japan | ibaraki prefecture | alnus trabeculosa | species | 1 | 1 |
| japan | ibaraki prefecture | betula grossa | species | 2 | 0 |
| japan | ibaraki prefecture | carpinus laxiflora | species | 2 | 0 |
| japan | ibaraki prefecture | carpinus tschonoskii | species | 6 | 0 |
| japan | ibaraki prefecture | corylus heterophylla var. thunbergii | varietas | 2 | 0 |
| japan | ibaraki prefecture | corylus sieboldiana var. sieboldiana | varietas | 4 | 0 |
| japan | iwate prefecture | alnus fauriei | species | 2 | 0 |
| japan | iwate prefecture | alnus hirsuta | species | 3 | 0 |
| japan | iwate prefecture | alnus pendula | species | 2 | 0 |
| japan | iwate prefecture | alnus trabeculosa | species | 0 | 1 |
| japan | iwate prefecture | betula maximowicziana | species | 2 | 0 |
| japan | iwate prefecture | betula platyphylla var. japonica | varietas | 1 | 0 |
| japan | iwate prefecture | carpinus laxiflora | species | 6 | 0 |
| japan | iwate prefecture | corylus heterophylla var. thunbergii | varietas | 1 | 0 |
| japan | iwate prefecture | corylus sieboldiana var. sieboldiana | varietas | 6 | 0 |
| japan | iwate prefecture | ostrya japonica | species | 4 | 0 |
| japan | kagoshima prefecture | alnus firma | species | 1 | 0 |
| japan | kagoshima prefecture | alnus sieboldiana | species | 1 | 0 |
| japan | kagoshima prefecture | carpinus japonica | species | 6 | 0 |
| japan | kagoshima prefecture | carpinus tschonoskii | species | 2 | 0 |
| japan | kochi prefecture | alnus hirsuta | species | 1 | 0 |
| japan | kochi prefecture | alnus pendula | species | 1 | 0 |
| japan | kochi prefecture | alnus sieboldiana | species | 2 | 0 |
| japan | kochi prefecture | betula grossa | species | 1 | 0 |
| japan | kochi prefecture | carpinus laxiflora | species | 2 | 0 |
| japan | kochi prefecture | carpinus tschonoskii | species | 3 | 0 |
| japan | kumamoto prefecture | alnus hirsuta | species | 1 | 0 |
| japan | kumamoto prefecture | betula grossa | species | 1 | 0 |
| japan | kumamoto prefecture | carpinus laxiflora | species | 1 | 0 |
| japan | kumamoto prefecture | carpinus tschonoskii | species | 1 | 0 |
| japan | kyoto prefecture | betula grossa | species | 1 | 0 |
| japan | kyoto prefecture | carpinus japonica | species | 10 | 0 |
| japan | kyoto prefecture | carpinus tschonoskii | species | 9 | 0 |
| japan | mie prefecture | alnus hirsuta | species | 1 | 0 |
| japan | mie prefecture | alnus sieboldiana | species | 2 | 0 |
| japan | mie prefecture | alnus trabeculosa | species | 1 | 0 |
| japan | mie prefecture | carpinus laxiflora | species | 2 | 0 |
| japan | miyazaki prefecture | alnus hirsuta | species | 2 | 0 |
| japan | miyazaki prefecture | betula grossa | species | 2 | 0 |
| japan | miyazaki prefecture | carpinus tschonoskii | species | 2 | 0 |
| japan | miyazaki prefecture | ostrya japonica | species | 2 | 0 |
| japan | nagano prefecture | alnus hirsuta | species | 2 | 0 |
| japan | nagano prefecture | alnus matsumurae | species | 4 | 0 |
| japan | nagano prefecture | alnus maximowiczii | species | 2 | 0 |
| japan | nagano prefecture | betula corylifolia | species | 2 | 0 |
| japan | nagano prefecture | betula davurica | species | 1 | 0 |
| japan | nagano prefecture | betula grossa | species | 3 | 0 |
| japan | nagano prefecture | betula maximowicziana | species | 2 | 0 |
| japan | nagano prefecture | betula platyphylla var. japonica | varietas | 6 | 0 |
| japan | nagano prefecture | corylus sieboldiana var. sieboldiana | varietas | 2 | 0 |
| japan | nagano prefecture | ostrya japonica | species | 1 | 0 |
| japan | nagasaki prefecture | carpinus tschonoskii | species | 3 | 0 |
| japan | niigata prefecture | alnus hirsuta | species | 1 | 0 |
| japan | niigata prefecture | alnus hirsuta var. sibirica | varietas | 1 | 0 |
| japan | niigata prefecture | alnus pendula | species | 1 | 0 |
| japan | niigata prefecture | alnus sieboldiana | species | 2 | 0 |
| japan | niigata prefecture | carpinus laxiflora | species | 3 | 0 |
| japan | niigata prefecture | carpinus tschonoskii | species | 1 | 0 |
| japan | niigata prefecture | corylus sieboldiana var. sieboldiana | varietas | 2 | 0 |
| japan | okayama prefecture | alnus pendula | species | 1 | 0 |
| japan | okayama prefecture | alnus trabeculosa | species | 2 | 0 |
| japan | okinawa prefecture | alnus formosana | species | 1 | 0 |
| japan | okinawa prefecture | alnus japonica | species | 2 | 0 |
| japan | saga prefecture | carpinus tschonoskii | species | 2 | 0 |
| japan | saitama prefecture | betula chichibuensis | species | 5 | 0 |
| japan | saitama prefecture | betula corylifolia | species | 1 | 0 |
| japan | saitama prefecture | betula globispica | species | 7 | 0 |
| japan | shiga prefecture | alnus japonica | species | 4 | 0 |
| japan | shiga prefecture | alnus pendula | species | 2 | 0 |
| japan | shiga prefecture | alnus sieboldiana | species | 2 | 0 |
| japan | shiga prefecture | carpinus laxiflora | species | 2 | 0 |
| japan | shiga prefecture | carpinus tschonoskii | species | 2 | 0 |
| japan | shiga prefecture | corylus sieboldiana var. sieboldiana | varietas | 2 | 0 |
| japan | shimane prefecture | betula grossa | species | 2 | 0 |
| japan | shimane prefecture | carpinus laxiflora | species | 1 | 0 |
| japan | shimane prefecture | carpinus tschonoskii | species | 1 | 0 |
| japan | shimane prefecture | ostrya japonica | species | 1 | 0 |
| japan | shizuoka prefecture | alnus hirsuta | species | 1 | 0 |
| japan | shizuoka prefecture | alnus sieboldiana | species | 7 | 0 |
| japan | shizuoka prefecture | alnus trabeculosa | species | 1 | 0 |
| japan | shizuoka prefecture | carpinus laxiflora | species | 1 | 0 |
| japan | shizuoka prefecture | ostrya japonica | species | 1 | 0 |
| japan | tochigi prefecture | alnus matsumurae | species | 1 | 0 |
| japan | tochigi prefecture | alnus trabeculosa | species | 0 | 1 |
| japan | tochigi prefecture | betula corylifolia | species | 3 | 0 |
| japan | tochigi prefecture | betula grossa | species | 7 | 0 |
| japan | tochigi prefecture | betula schmidtii | species | 2 | 0 |
| japan | tochigi prefecture | carpinus laxiflora | species | 2 | 0 |
| japan | tokyo prefecture | alnus hirsuta | species | 1 | 0 |
| japan | tokyo prefecture | alnus sieboldiana | species | 2 | 0 |
| japan | tokyo prefecture | ostrya japonica | species | 2 | 0 |
| japan | tottori prefecture | carpinus laxiflora | species | 3 | 0 |
| japan | tottori prefecture | carpinus tschonoskii | species | 3 | 0 |
| japan | toyama prefecture | alnus hirsuta | species | 1 | 0 |
| japan | toyama prefecture | alnus pendula | species | 1 | 0 |
| japan | toyama prefecture | betula corylifolia | species | 1 | 0 |
| japan | toyama prefecture | betula costata | species | 1 | 0 |
| japan | toyama prefecture | betula ermanii | species | 1 | 0 |
| japan | toyama prefecture | betula grossa | species | 1 | 0 |
| japan | toyama prefecture | betula maximowicziana | species | 2 | 0 |
| japan | toyama prefecture | betula platyphylla var. japonica | varietas | 1 | 0 |
| japan | wakayama prefecture | alnus pendula | species | 2 | 0 |
| japan | wakayama prefecture | betula grossa | species | 1 | 0 |
| japan | wakayama prefecture | carpinus laxiflora | species | 2 | 0 |
| japan | wakayama prefecture | carpinus tschonoskii | species | 2 | 0 |
| japan | yamagata prefecture | alnus fauriei | species | 1 | 0 |
| japan | yamagata prefecture | alnus hirsuta var. sibirica | varietas | 1 | 0 |
| japan | yamagata prefecture | alnus pendula | species | 1 | 0 |
| japan | yamagata prefecture | betula maximowicziana | species | 1 | 0 |
| japan | yamagata prefecture | carpinus laxiflora | species | 1 | 0 |
| japan | yamagata prefecture | corylus sieboldiana var. sieboldiana | varietas | 1 | 0 |
| japan | yamanashi prefecture | betula grossa | species | 2 | 0 |
| japan | yamanashi prefecture | betula platyphylla var. japonica | varietas | 2 | 0 |
| japan | yamanashi prefecture | carpinus tschonoskii | species | 2 | 0 |
| japan | yamanashi prefecture | corylus sieboldiana var. sieboldiana | varietas | 1 | 0 |
| japan | yamanashi prefecture | ostrya japonica | species | 1 | 0 |
| kyrgyzstan | | betula tianschanica | species | 1 | 0 |
| kyrgyzstan | | betula turkestanica | species | 1 | 0 |
| latvia | | betula fruticosa | species | 4 | 0 |
| latvia | | betula humilis | species | 5 | 0 |
| lebanon | | ostrya carpinifolia | species | 3 | 0 |
| lithuania | | betula costata | species | 1 | 0 |
| mexico | | alnus acuminata | species | 1 | 0 |
| mexico | | alnus acuminata subsp. arguta | subspecies | 4 | 0 |
| mexico | oaxaca | alnus acuminata | species | 1 | 0 |
| mexico | veracruz-llave | alnus jorullensis subsp. jorullensis | subspecies | 2 | 0 |
| nepal | | carpinus viminea | species | 1 | 0 |
| netherlands | | alnus glutinosa | species | 6 | 0 |
| netherlands | groningen province | alnus glutinosa | species | 3 | 0 |
| netherlands | overijssel province | alnus glutinosa | species | 33 | 0 |
| norway | | betula nana | species | 11 | 0 |
| norway | | betula pendula | species | 1 | 0 |
| norway | | betula pubescens | species | 5 | 0 |
| norway | more og romsdal county | betula pubescens | species | 0 | 2 |
| norway | oslo county | betula pubescens | species | 0 | 1 |
| peru | | alnus acuminata | species | 1 | 0 |
| poland | | betula humilis | species | 25 | 0 |
| poland | | betula pendula | species | 41 | 0 |
| poland | | betula pubescens | species | 12 | 0 |
| poland | | betula x obscura | species | 54 | 0 |
| poland | mazovia province | betula pendula | species | 1 | 0 |
| poland | mazovia province | carpinus betulus | species | 1 | 0 |
| poland | mazovia province | corylus avellana | species | 1 | 0 |
| portugal | | alnus incana | species | 2 | 0 |
| portugal | | corylus avellana | species | 37 | 0 |
| portugal | | corylus colurna | species | 1 | 0 |
| russia | | alnus maximowiczii | species | 3 | 0 |
| russia | | betula nana | species | 19 | 0 |
| russia | | betula pendula | species | 3 | 0 |
| russia | | betula pendula var. carelica | varietas | 21 | 0 |
| russia | | betula pubescens | species | 14 | 0 |
| russia | | betula pubescens x betula nana | species | 2 | 0 |
| russia | belgorod oblast | betula pendula | species | 0 | 1 |
| russia | krasnoyarsk krai | alnus alnobetula subsp. alnobetula | subspecies | 4 | 0 |
| russia | krasnoyarsk krai | betula nana | species | 2 | 0 |
| russia | sakha republic | alnus alnobetula subsp. fruticosa | subspecies | 1 | 0 |
| russia | sakha republic | betula nana | species | 1 | 0 |
| russia | sakhalin oblast | betula middendorffii | species | 2 | 0 |
| russia | voronezh oblast | betula pendula | species | 0 | 1 |
| slovakia | | betula pubescens | species | 2 | 0 |
| south korea | | alnus hirsuta | species | 8 | 0 |
| spain | | alnus glutinosa | species | 1 | 0 |
| spain | | betula pubescens | species | 1 | 0 |
| sweden | | betula alleghaniensis | species | 1 | 0 |
| sweden | | betula humilis | species | 1 | 0 |
| sweden | | betula nana | species | 3 | 0 |
| sweden | | betula pendula | species | 3 | 0 |
| sweden | | betula pubescens | species | 2 | 0 |
| switzerland | | alnus alnobetula | species | 3 | 0 |
| switzerland | | alnus incana | species | 1 | 0 |
| switzerland | geneva region | alnus incana | species | 2 | 0 |
| switzerland | geneva region | betula pendula | species | 2 | 0 |
| switzerland | geneva region | corylus avellana | species | 2 | 0 |
| thailand | | betula alnoides | species | 15 | 0 |
| turkey | | corylus colurna | species | 1 | 0 |
| turkey | giresun province | alnus glutinosa subsp. glutinosa | subspecies | 7 | 0 |
| united kingdom | | alnus cordata | species | 1 | 0 |
| united kingdom | | alnus fauriei | species | 2 | 0 |
| united kingdom | | alnus glutinosa | species | 5 | 0 |
| united kingdom | | alnus henryi | species | 1 | 0 |
| united kingdom | | alnus incana | species | 1 | 0 |
| united kingdom | | alnus nitida | species | 1 | 0 |
| united kingdom | | alnus orientalis | species | 1 | 0 |
| united kingdom | | alnus sieboldiana | species | 1 | 0 |
| united kingdom | | alnus subcordata | species | 1 | 0 |
| united kingdom | | betula nana | species | 9 | 0 |
| united kingdom | | betula nigra | species | 2 | 0 |
| united kingdom | | betula pendula | species | 5 | 0 |
| united kingdom | | betula pubescens | species | 9 | 0 |
| united kingdom | | carpinus betulus | species | 3 | 0 |
| united kingdom | | corylus avellana | species | 13 | 0 |
| united kingdom | england | alnus cordata | species | 1 | 0 |
| united kingdom | england | alnus fauriei | species | 675 | 0 |
| united kingdom | england | alnus glutinosa | species | 1 | 0 |
| united kingdom | england | alnus glutinosa subsp. glutinosa | subspecies | 2 | 0 |
| united kingdom | england | alnus nitida | species | 4 | 0 |
| united kingdom | england | alnus orientalis | species | 3 | 0 |
| united kingdom | england | alnus rubra | species | 2 | 0 |
| united kingdom | england | alnus subcordata | species | 4 | 0 |
| united kingdom | england | betula medwediewii | species | 16 | 0 |
| united kingdom | england | betula nana | species | 16 | 0 |
| united kingdom | scotland | alnus alnobetula | species | 1 | 0 |
| united kingdom | scotland | betula pendula | species | 39 | 0 |
| united states | | alnus alnobetula subsp. sinuata | subspecies | 2 | 0 |
| united states | | alnus hirsuta | species | 1 | 0 |
| united states | | alnus incana subsp. tenuifolia | subspecies | 1 | 0 |
| united states | | alnus maritima | species | 2 | 0 |
| united states | | alnus rubra | species | 1 | 0 |
| united states | | alnus serrulata | species | 5 | 0 |
| united states | | alnus x mayrii | species | 2 | 0 |
| united states | | betula glandulosa | species | 2 | 0 |
| united states | | betula lenta | species | 3 | 0 |
| united states | | betula maximowicziana | species | 1 | 0 |
| united states | | betula nana | species | 2 | 0 |
| united states | | betula neoalaskana | species | 3 | 0 |
| united states | | betula nigra | species | 5 | 0 |
| united states | | betula papyrifera | species | 4 | 0 |
| united states | | betula populifolia | species | 4 | 0 |
| united states | | carpinus betulus | species | 1 | 0 |
| united states | | carpinus caroliniana | species | 1 | 0 |
| united states | alaska | alnus alnobetula | species | 2 | 0 |
| united states | alaska | betula neoalaskana | species | 1 | 0 |
| united states | colorado | alnus incana subsp. tenuifolia | subspecies | 1 | 0 |
| united states | district of columbia | alnus incana subsp. rugosa | subspecies | 3 | 0 |
| united states | district of columbia | ostrya virginiana | species | 4 | 0 |
| united states | maryland | alnus hirsuta var. sibirica | varietas | 4 | 0 |
| united states | maryland | alnus maritima subsp. maritima | subspecies | 4 | 0 |
| united states | maryland | betula platyphylla | species | 3 | 0 |
| united states | maryland | carpinus caroliniana | species | 6 | 0 |
| united states | maryland | carpinus turczaninovii | species | 7 | 0 |
| united states | massachusetts | alnus incana subsp. rugosa | subspecies | 4 | 0 |
| united states | massachusetts | alnus japonica | species | 1 | 0 |
| united states | massachusetts | alnus maritima | species | 3 | 0 |
| united states | massachusetts | alnus x mayrii | species | 1 | 0 |
| united states | massachusetts | carpinus japonica | species | 1 | 0 |
| united states | massachusetts | carpinus orientalis | species | 1 | 0 |
| united states | massachusetts | corylus x vilmorinii | species | 1 | 0 |
| united states | michigan | betula papyrifera | species | 2 | 0 |
| united states | michigan | ostrya virginiana | species | 1 | 0 |
| united states | minnesota | betula papyrifera | species | 0 | 1 |
| united states | new york | carpinus caroliniana | species | 4 | 0 |
| united states | north dakota | betula occidentalis | species | 2 | 0 |
| united states | north dakota | betula pumila | species | 2 | 0 |
| united states | oklahoma | alnus maritima subsp. oklahomensis | subspecies | 3 | 0 |
| united states | oregon | alnus rubra | species | 1 | 0 |
| united states | texas | betula papyrifera | species | 51 | 0 |
| united states | utah | ostrya knowltonii | species | 1 | 0 |
| united states | virginia | betula lenta | species | 2 | 0 |
| united states | virginia | carpinus caroliniana | species | 1 | 0 |
| united states | virginia | corylus cornuta | species | 5 | 0 |
| united states | virginia | ostrya virginiana | species | 3 | 0 |
| united states | washington | alnus rubra | species | 3 | 0 |
| united states | washington | betula nigra | species | 4 | 0 |
| united states | washington | corylus avellana | species | 4 | 0 |
| united states | wisconsin | alnus incana | species | 3 | 0 |
| united states | wisconsin | betula alleghaniensis | species | 6 | 0 |
| united states | wisconsin | betula papyrifera | species | 6 | 1 |
| united states | wisconsin | carpinus caroliniana | species | 9 | 0 |
| united states | wisconsin | corylus americana | species | 5 | 0 |
| united states | wisconsin | corylus cornuta | species | 9 | 0 |
| united states | wisconsin | ostrya virginiana | species | 8 | 0 |