Harvard University Herbaria & Libraries

Rosaceae
A: 00003063 Crataegus cristata Ashe USA: Pennsylvania Allegheny County, Stowe Township, near Turne... W. W. Ashe & J. A. Shafer JAS 18 1901-10
A: 00064304 Crataegus cristata Ashe USA: Pennsylvania Pittsburgh: 22nd Ward, Pittsburgh, hillside ... W. W. Ashe & J. A. Shafer 7 1907-10
GH: 01613973 Crataegus intricata Lange USA: Pennsylvania 22nd Ward Pittsburg. Hillside facing Forbes ... W. W. Ashe & J. A. Shafer 1907-10
GH: 01613974 Crataegus intricata Lange USA: Pennsylvania 22nd Ward Pittsburg. Hillside facing Forbes ... W. W. Ashe & J. A. Shafer 1902-5-21
GH: 01646010 Crataegus pruinosa (J. C. Wendland) K. Koch USA: Pennsylvania Stowe Township, near Turner Sta. W. W. Ashe & J. A. Shafer 1900-10
GH: 01646066 Crataegus pruinosa (J. C. Wendland) K. Koch USA: Pennsylvania 22nd Ward Pittsburg, facing Forbes St. opp. ... W. W. Ashe & J. A. Shafer 1901-10