| argentina | santa fe province | lactuca sativa | species | 0 | 1 |
| bangladesh | dhaka division | lactuca sativa | species | 0 | 1 |
| 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 sativa var. longifolia | varietas | 0 | 1 |
| canada | northwest territories | lactuca sativa | species | 4 | 0 |
| canada | ontario | lactuca sativa var. crispa | varietas | 0 | 1 |
| canada | quebec | lactuca sativa | species | 0 | 1 |
| china | | lactuca sativa | species | 162 | 0 |
| china | beijing | lactuca sativa | species | 1 | 0 |
| china | chongqing | lactuca sativa var. longifolia | varietas | 0 | 1 |
| china | hebei | lactuca sativa | species | 1 | 0 |
| china | ningxia | lactuca sativa | species | 0 | 1 |
| china | shaanxi | lactuca sativa | species | 1 | 0 |
| china | xinjiang | lactuca sativa | species | 0 | 1 |
| czech republic | | lactuca sativa | species | 1 | 0 |
| egypt | | lactuca sativa | species | 1 | 0 |
| france | | lactuca sativa | species | 4 | 0 |
| germany | | lactuca sativa | species | 6 | 0 |
| germany | | lactuca sativa var. capitata | varietas | 2 | 0 |
| germany | brandenburg | lactuca sativa | species | 2 | 0 |
| greece | | lactuca sativa var. capitata | varietas | 1 | 0 |
| hong kong | | lactuca sativa | species | 0 | 1 |
| hong kong | | lactuca sativa var. longifolia | varietas | 0 | 1 |
| india | | lactuca sativa | species | 2 | 0 |
| iran | | lactuca sativa | species | 25 | 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 |
| israel | haifa district | lactuca sativa | species | 0 | 1 |
| italy | | lactuca sativa | species | 2 | 0 |
| italy | | lactuca sativa var. longifolia | varietas | 3 | 0 |
| italy | campania region | lactuca sativa | species | 0 | 1 |
| italy | piemonte region | lactuca sativa | species | 0 | 1 |
| 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 |
| 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 |
| romania | | lactuca sativa | species | 1 | 0 |
| south korea | | lactuca sativa | species | 35 | 0 |
| south korea | | lactuca sativa var. longifolia | varietas | 1 | 0 |
| spain | asturias | lactuca sativa | species | 0 | 1 |
| spain | basque country | lactuca sativa | species | 0 | 1 |
| sudan | khartoum | lactuca sativa | species | 0 | 1 |
| taiwan | | lactuca sativa | species | 0 | 1 |
| 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 | manisa province | lactuca sativa | species | 0 | 1 |
| turkey | samsun province | lactuca sativa | species | 0 | 1 |
| ukraine | kharkiv oblast | lactuca sativa | species | 0 | 1 |
| united states | | lactuca sativa | species | 1 | 0 |
| united states | | lactuca sativa var. capitata | varietas | 1 | 0 |
| united states | arizona | lactuca sativa var. longifolia | varietas | 0 | 2 |
| 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 sativa | species | 0 | 2 |
| united states | florida | lactuca sativa var. longifolia | varietas | 0 | 1 |
| 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 | michigan | lactuca sativa var. longifolia | varietas | 0 | 1 |
| 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 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 | texas | lactuca sativa var. capitata | varietas | 0 | 1 |
| united states | texas | lactuca sativa var. longifolia | varietas | 0 | 2 |