Harvard University Herbaria & Libraries

Caprifoliaceae
GH: 02184879 Viburnum dentatum Linnaeus USA: Pennsylvania near Three Mile Run, north of Sellersville C. D. Fretz 1904-6-25
GH: 02184880 Viburnum dentatum Linnaeus USA: Pennsylvania Glen Lake C. D. Fretz 1904-8-19
Rosaceae
GH: 01758269 Crataegus calpodendron (Ehrhart) Medikus USA: Pennsylvania Sellersville C. D. Fretz [data not captured] 123 1904-9-30
GH: 01611391 Crataegus crus-galli Linnaeus USA: Pennsylvania Sellersville C. D. Fretz [data not captured] 124 (191) 1904-9-30
A: 01669619 Crataegus pedicellata Sargent USA: Pennsylvania Near Sellersville C. D. Fretz 184 1904-5-20
GH: 01646137 Crataegus pruinosa (J. C. Wendland) K. Koch USA: Pennsylvania Sellersville C. D. Fretz [data not captured] 126 1904-9-30
A: 01649216 Crataegus succulenta Schrader ex Link USA: Pennsylvania Deep Run C. D. Fretz 197 1904-10-1