32 



APPENDIX. 



Crataegus apposita Sarg. Rockhill. 



Crataegus Schweinitziana Sarg. Ridgc Valley. 



Crataegus uniflora Muench. Dwarf Thorn. In thickets frequent. 



Crataegus Smithii Sarg. Harr's dam. 



Crataegus tomentosa L. Pear Thorn. Not rare in thickets. 



Crataegus structilis Ashe. Sellersville. 



Crataegus opica Ashe. Sellersville; West Rockhill. 



Crataegus succulenta Link. Sellersville. 



Crataegus infera Sarg. West Rockhill. 



Crataegus pygmaea Sarg. West Rockhill. 



Crataegus micracantha Sarg. West Rockhill. 



Crataegus cordata (Mill.) Ait. Washington Thorn. Frequent throughout. 



Crataegus oxyacantha L. English Haw^thorn. In the lower end. 



Cotoneaster Pyracantha (L.) Spach. Fire Thorn. New Britain, A. S. Martin. 



Malus coronaria (L.) Mill. American Crab Apple. In thickets. 



Malus Malus (L.) Britton. Apple. Thickets and along fences. 



Family 12. Drupaceae DC. 



Amygdalus Persica L. Peach. Escaped into thickets. 



Prunus Americana Marsh. Wild Plum. Along streams and in thickets. 



Prunus pumila L. Sand Cherry. Islands and shores of the Delaware, (M. C). 



Prunus Cerasus L. Sour Cherry. Along fences and in thickets. 



Prunus Avium L. Sweet Cherry. Woods and thickets. 



Prunus Virginiana L. Choke Cherry. In thickets. 



Prunus serotina Ehrh. Wild Black Cherry. Along fences. 



Family 13. Caesalpiniaceae Kl. & Garcke. 



Cercis Canadensis L. Red-bud. Judas Tree. Occasionally throughout. 



Cassia nictitans L. Sensitive Pea. In dry soil. 



Cassia Chamaecrista L. Partridge Pea. Chiefly along the Delaware. 



Cassia Marylandica L. American Senna. Along streams. 



Gleditsia triacanthos L. Honey Locust. In woods along the Delaware. 



Family 14. Papilionaceae L. 



Baptisia tinctoria (L.) R. Br. Wild Indigo. In a few places. 



Crotalaria sagittalis L. Rattle-box. Pipersville; Holicong, Miss Emma Trego; 

 Upper Makefield, Miss Agnes B. Williams, Glenlake. 



Cytisus scoparius (L.) Link. Broom. In the county, (P. Fl.). 



Lupinus perennis L. Wild Lupine. A few stations. 



Medicago sativa L. Alfalfa. Purple Medic. Doylestown, Prof. A. S. Martin. 



Medicago lupulina L. Black Medic. In fields and waste places, not common. 



Medicago denticulata Willd. Toothed Medic. In the county, (P. FL). 



Medicago Arabica All. Spotted Medic. Andalusia, I. C. Martindale. 



Melilotus alba Desv. White Melilot. Durham Furnace; Sellersville; Point Pleasant; 

 New Hope, Dr. E. Newlin Williams, Langhorne. 



Melilotus officinalis (L.) Lam. Yellow Melilot. Quakertown; Point Pleasant; New- 

 Hope, Dr. E. Newlin Williams, Langhorne. 



