| argentina | santa fe province | lactuca sativa | species | 0 | 1 |
| armenia | | lactuca quercina | species | 1 | 0 |
| australia | south australia | lactuca serriola | species | 0 | 1 |
| austria | | lactuca quercina | species | 1 | 0 |
| azerbaijan | | lactuca saligna | species | 1 | 0 |
| bangladesh | dhaka division | lactuca sativa | species | 0 | 1 |
| belgium | | lactuca virosa | species | 2 | 0 |
| belgium | flemish region | lactuca sativa | species | 0 | 1 |
| brazil | mato grosso | lactuca sativa | species | 0 | 1 |
| brazil | minas gerais | lactuca sativa | species | 0 | 1 |
| brazil | pernambuco | lactuca sativa | species | 0 | 2 |
| brazil | rio de janeiro | lactuca sativa | species | 0 | 3 |
| brazil | rio grande do sul | lactuca sativa | species | 0 | 1 |
| brazil | sao paulo | lactuca sativa | species | 0 | 2 |
| canada | british columbia | lactuca canadensis | species | 1 | 0 |
| canada | british columbia | lactuca sativa var. longifolia | varietas | 0 | 1 |
| canada | manitoba | lactuca floridana | species | 2 | 0 |
| canada | northwest territories | lactuca sativa | species | 4 | 0 |
| canada | nova scotia | lactuca hirsuta | species | 2 | 0 |
| canada | ontario | lactuca biennis | species | 1 | 0 |
| canada | ontario | lactuca floridana | species | 4 | 0 |
| canada | ontario | lactuca hirsuta | species | 2 | 0 |
| canada | ontario | lactuca saligna | species | 2 | 0 |
| canada | ontario | lactuca sativa var. crispa | varietas | 0 | 1 |
| canada | ontario | lactuca serriola | species | 14 | 0 |
| canada | ontario | lactuca sp. asm-2014 | species | 1 | 0 |
| canada | quebec | lactuca biennis | species | 2 | 0 |
| canada | quebec | lactuca canadensis | species | 4 | 0 |
| canada | quebec | lactuca sativa | species | 0 | 1 |
| canada | yukon | lactuca biennis | species | 2 | 0 |
| canada | yukon | lactuca serriola | species | 2 | 0 |
| china | | lactuca dolichophylla | species | 2 | 0 |
| china | | lactuca indica | species | 1 | 0 |
| china | | lactuca sativa | species | 162 | 0 |
| china | | lactuca scandens | species | 12 | 0 |
| china | | lactuca serriola | species | 7 | 0 |
| china | | lactuca tatarica | species | 2 | 0 |
| china | anhui | lactuca dissecta | species | 3 | 0 |
| china | beijing | lactuca sativa | species | 1 | 0 |
| china | chongqing | lactuca indica | species | 6 | 0 |
| china | chongqing | lactuca sativa var. longifolia | varietas | 0 | 1 |
| china | hebei | lactuca sativa | species | 1 | 0 |
| china | hebei | lactuca tatarica | species | 6 | 0 |
| china | ningxia | lactuca sativa | species | 0 | 1 |
| china | shaanxi | lactuca sativa | species | 1 | 0 |
| china | shanxi | lactuca indica var. laciniata | varietas | 6 | 0 |
| china | sichuan | lactuca raddeana | species | 12 | 0 |
| china | xinjiang | lactuca sativa | species | 0 | 1 |
| china | xinjiang | lactuca undulata | species | 6 | 0 |
| china | yunnan | lactuca dolichophylla | species | 6 | 0 |
| china | yunnan | lactuca indica | species | 1 | 0 |
| china | yunnan | lactuca serriola | species | 6 | 0 |
| cyprus | | lactuca viminea | species | 1 | 0 |
| czech republic | | lactuca sativa | species | 1 | 0 |
| czech republic | | lactuca serriola | species | 1 | 0 |
| egypt | | lactuca sativa | species | 1 | 0 |
| egypt | | lactuca serriola | species | 1 | 0 |
| france | | lactuca perennis | species | 1 | 0 |
| france | | lactuca sativa | species | 4 | 0 |
| france | | lactuca serriola | species | 1 | 0 |
| germany | | lactuca dissecta | species | 1 | 0 |
| germany | | lactuca perennis | species | 1 | 0 |
| germany | | lactuca saligna | species | 2 | 0 |
| germany | | lactuca sativa | species | 6 | 0 |
| germany | | lactuca sativa var. capitata | varietas | 2 | 0 |
| germany | | lactuca serriola | species | 31 | 0 |
| germany | | lactuca tatarica | species | 1 | 0 |
| germany | | lactuca tenerrima | species | 1 | 0 |
| germany | | lactuca viminea | species | 3 | 0 |
| germany | brandenburg | lactuca sativa | species | 2 | 0 |
| germany | brandenburg | lactuca tatarica | species | 1 | 0 |
| germany | hamburg | lactuca perennis | species | 1 | 0 |
| greece | | lactuca sativa var. capitata | varietas | 1 | 0 |
| greece | | lactuca serriola | species | 2 | 0 |
| greece | | lactuca viminea | species | 1 | 0 |
| greece | west macedonia region | lactuca viminea | species | 1 | 0 |
| hong kong | | lactuca sativa | species | 0 | 1 |
| hong kong | | lactuca sativa var. longifolia | varietas | 0 | 1 |
| india | | lactuca indica | species | 1 | 0 |
| india | | lactuca sativa | species | 2 | 0 |
| india | karnataka | lactuca serriola | species | 0 | 2 |
| iran | | lactuca orientalis | species | 1 | 0 |
| iran | | lactuca pumila | species | 4 | 0 |
| iran | | lactuca sativa | species | 25 | 0 |
| iran | alborz province | lactuca undulata | species | 6 | 0 |
| iran | east azerbaijan province | lactuca sativa | species | 16 | 0 |
| iran | isfahan province | lactuca sativa | species | 3 | 0 |
| iran | tehran province | lactuca sativa | species | 3 | 1 |
| iran | yazd province | lactuca sativa | species | 1 | 0 |
| iraq | | lactuca serriola | species | 1 | 0 |
| israel | haifa district | lactuca sativa | species | 0 | 1 |
| italy | | lactuca sativa | species | 2 | 0 |
| italy | | lactuca sativa var. longifolia | varietas | 3 | 0 |
| italy | | lactuca viminea | species | 2 | 0 |
| italy | | lactuca virosa | species | 1 | 0 |
| italy | campania region | lactuca sativa | species | 0 | 1 |
| italy | marche region | lactuca viminea | species | 1 | 0 |
| italy | piemonte region | lactuca sativa | species | 0 | 1 |
| japan | | lactuca indica | species | 1 | 0 |
| japan | chiba prefecture | lactuca sativa var. crispa | varietas | 2 | 0 |
| japan | fukuoka prefecture | lactuca sativa var. capitata | varietas | 1 | 0 |
| japan | hokkaido prefecture | lactuca sativa var. crispa | varietas | 0 | 1 |
| mexico | federal district | lactuca sativa | species | 0 | 1 |
| netherlands | | lactuca sativa var. capitata | varietas | 1 | 0 |
| netherlands | | lactuca virosa | species | 1 | 0 |
| new zealand | | lactuca serriola | species | 1 | 0 |
| nigeria | lagos | lactuca sativa | species | 0 | 1 |
| norway | more og romsdal county | lactuca sativa var. capitata | varietas | 0 | 1 |
| pakistan | | lactuca sativa | species | 1 | 0 |
| portugal | | lactuca serriola | species | 2 | 0 |
| portugal | | lactuca watsoniana | species | 2 | 0 |
| romania | | lactuca sativa | species | 1 | 0 |
| russia | | lactuca quercina | species | 2 | 0 |
| russia | | lactuca sibirica | species | 3 | 0 |
| russia | | lactuca tatarica | species | 3 | 0 |
| russia | primorsky krai | lactuca sibirica | species | 6 | 0 |
| russia | samara oblast | lactuca sibirica | species | 1 | 0 |
| south africa | free state province | lactuca inermis | species | 1 | 0 |
| south africa | northern cape province | lactuca dregeana | species | 3 | 0 |
| south africa | northern cape province | lactuca serriola | species | 2 | 0 |
| south africa | the western cape province | lactuca serriola | species | 1 | 0 |
| south korea | | lactuca indica var. laciniata | varietas | 6 | 0 |
| south korea | | lactuca sativa | species | 35 | 0 |
| south korea | | lactuca sativa var. longifolia | varietas | 1 | 0 |
| south korea | | lactuca serriola | species | 24 | 0 |
| spain | | lactuca virosa | species | 1 | 0 |
| spain | asturias | lactuca sativa | species | 0 | 1 |
| spain | basque country | lactuca sativa | species | 0 | 1 |
| spain | madrid | lactuca serriola | species | 0 | 1 |
| sudan | khartoum | lactuca sativa | species | 0 | 1 |
| switzerland | | lactuca serriola | species | 1 | 0 |
| switzerland | geneva region | lactuca serriola | species | 2 | 0 |
| taiwan | | lactuca sativa | species | 0 | 1 |
| taiwan | taiwan municipality | lactuca indica | species | 1 | 0 |
| togo | | lactuca inermis | species | 6 | 0 |
| tunisia | monastir governorate | lactuca sativa | species | 0 | 1 |
| tunisia | sousse governorate | lactuca sativa | species | 0 | 1 |
| turkey | ankara province | lactuca sativa var. capitata | varietas | 0 | 2 |
| turkey | ankara province | lactuca sativa var. crispa | varietas | 0 | 1 |
| turkey | ankara province | lactuca sativa var. longifolia | varietas | 0 | 1 |
| turkey | antalya province | lactuca serriola | species | 3 | 0 |
| turkey | erzurum province | lactuca serriola | species | 0 | 1 |
| turkey | manisa province | lactuca sativa | species | 0 | 1 |
| turkey | samsun province | lactuca sativa | species | 0 | 1 |
| ukraine | kharkiv oblast | lactuca sativa | species | 0 | 1 |
| united kingdom | | lactuca saligna | species | 9 | 0 |
| united kingdom | | lactuca serriola | species | 2 | 0 |
| united kingdom | | lactuca virosa | species | 1 | 0 |
| united states | | lactuca canadensis | species | 4 | 0 |
| united states | | lactuca graminifolia | species | 1 | 0 |
| united states | | lactuca ludoviciana | species | 10 | 0 |
| united states | | lactuca sativa | species | 1 | 0 |
| united states | | lactuca sativa var. capitata | varietas | 1 | 0 |
| united states | | lactuca serriola | species | 3 | 0 |
| united states | | lactuca sp. mavrodiev 2003 s.n. | species | 3 | 0 |
| united states | arizona | lactuca sativa var. longifolia | varietas | 0 | 2 |
| united states | arkansas | lactuca hirsuta | species | 1 | 0 |
| united states | california | lactuca sativa | species | 0 | 4 |
| united states | california | lactuca sativa var. crispa | varietas | 0 | 2 |
| united states | california | lactuca sativa var. longifolia | varietas | 0 | 3 |
| united states | colorado | lactuca sativa | species | 0 | 1 |
| united states | colorado | lactuca sativa var. capitata | varietas | 0 | 1 |
| united states | delaware | lactuca sativa var. capitata | varietas | 0 | 1 |
| united states | florida | lactuca floridana | species | 1 | 0 |
| united states | florida | lactuca graminifolia | species | 3 | 0 |
| united states | florida | lactuca sativa | species | 0 | 2 |
| united states | florida | lactuca sativa var. longifolia | varietas | 0 | 1 |
| united states | florida | lactuca sp. mavrodiev 2003 s.n. | species | 2 | 0 |
| united states | florida | lactuca sp. mavrodiev s.n. | species | 3 | 0 |
| united states | illinois | lactuca sativa | species | 0 | 1 |
| united states | iowa | lactuca sativa var. capitata | varietas | 0 | 1 |
| united states | iowa | lactuca sativa var. longifolia | varietas | 0 | 3 |
| united states | kansas | lactuca canadensis | species | 1 | 0 |
| united states | kansas | lactuca ludoviciana | species | 1 | 0 |
| united states | kansas | lactuca serriola | species | 1 | 0 |
| united states | michigan | lactuca sativa var. longifolia | varietas | 0 | 1 |
| united states | minnesota | lactuca ludoviciana | species | 2 | 0 |
| united states | mississippi | lactuca graminifolia | species | 1 | 0 |
| united states | nebraska | lactuca sativa var. capitata | varietas | 0 | 1 |
| united states | nebraska | lactuca sativa var. longifolia | varietas | 0 | 3 |
| united states | new jersey | lactuca sativa var. capitata | varietas | 0 | 1 |
| united states | new york | lactuca canadensis | species | 4 | 0 |
| united states | new york | lactuca sativa | species | 0 | 1 |
| united states | new york | lactuca sativa var. capitata | varietas | 0 | 1 |
| united states | ohio | lactuca sativa var. longifolia | varietas | 0 | 1 |
| united states | pennsylvania | lactuca sativa var. capitata | varietas | 0 | 1 |
| united states | south carolina | lactuca sativa | species | 0 | 1 |
| united states | tennessee | lactuca biennis | species | 8 | 0 |
| united states | tennessee | lactuca canadensis | species | 2 | 0 |
| united states | tennessee | lactuca floridana | species | 2 | 0 |
| united states | tennessee | lactuca graminifolia | species | 1 | 0 |
| united states | tennessee | lactuca saligna | species | 1 | 0 |
| united states | tennessee | lactuca serriola | species | 2 | 0 |
| united states | texas | lactuca graminifolia | species | 1 | 0 |
| united states | texas | lactuca sativa var. capitata | varietas | 0 | 1 |
| united states | texas | lactuca sativa var. longifolia | varietas | 0 | 2 |
| united states | virginia | lactuca canadensis | species | 3 | 0 |
| united states | virginia | lactuca floridana | species | 3 | 0 |
| united states | washington | lactuca serriola | species | 0 | 1 |
| united states | wisconsin | lactuca biennis | species | 6 | 0 |