DBVPACEAE. 191 



71. Crataegus pygmaea Sarg. Proc. A. N. Si Philada., lvii. 



Bucks— Roadsides near Sellersville (Fr.). 



72. Crataegus infera Sarg. Proo. A. >N. S. Philada., lvii. 



Bucks— Roadsides near SelleTsville (Fr.). 



73. Crataegus Schweinitziana Sarg. Proo. A. N. S. Philada., lvii. 



Bucks— Roadsides near Sellersville (Fr.). 



74. Crataegus Darlingtoniana Sarg. Proc. A. N. S. Philada., lvii. 



Chester— Serpentine Ridge north of West Chester (B. Sm.). 



75. Crataegus uniflora Muenoh. M. p. 522. 



Bucks— Near Sellersville (Fr.). Delaware— Lownes ' Run, Springfield 

 (B. Sm.). Berks— Near Kutztown (Gruber). 1 ■ 

 New Jersey— Frequent. 



76. Crataegus Smithii Sarg. Trees and shrubs. Pt. ii, 67, t. 34 (1903). 



Bucks— Near Sellersville (Fr.). Delaware— Open hillsides along Low- 

 nes' Run, Springfield, Dr. George Smith; near Media; Newtown and 

 Marple line (B. Sm.). 



77. Crataegus tomentosa L. M. p. 522. 



Bucks — Near Sellersville, Durham (Fr.). Berks — Near Kutztown 

 (Gruber). Northampton— Chestnut Hill, Baston (Porter). 



78. Crataegus structilis Ashe. Jour. Elisha Mitchell Sci. Soc, xix, 12 



(1903). 

 Biicks— Near Sellersville (Fr.). Berks— Banks of Secony Creek near 

 Kutztown (Gruber). 



79. Crataegus succulenta Link. Man. Trees, 497. 



Bucks— Near Sellersville (Fr.). Delaware— Along Crum Creek below 

 . Castle Rock (B. Sm.). .Berta-^Near Kutztown (Gruber). 

 80.' Crataegus radiosa Sarg. Proc. A. N. S. Philada., lvii. 



Delaware— Darby Creek near the mouth of Collen Brook, U. Darby (B. 

 Sm.). 



81. Crataegus micrantha Sarg. Proc. A. N. S. Philada., lvii. 



Bucks— Near Sellersville (Fr.). Berks— Rocky 1 ridge near Kutztown 

 (Gruber). , 



82. Crataegus opica Ashe. Jour. Elisha Mitchell Sci. Soc, six, 10 (1903). 



Bucks— Durham, near Sellersville (Fr.). Berks— Secony Creek near 

 Kutztown (Gruber). , 



83. Crataegus Chadsfordiana Sarg. Proc. A. N. S. Philada., lvii. 



Delaware— Wooded slopes below Chad's Ford (B. Sm.). 



84. Crataegus cordata Ait. Washington Thorn. M. p. 520. Introduced 



from the South for hedging and naturalized. 



85. Crataegus Oxyacantha L. English Bawthorn. M. p. 520. Escaped 



from cultivation. 



Family 13. DRUPAOEAE DC. Plum Family. 



Drupe glabrous. 1. Primus. 



Drupe velvety. 2. Amygdahis. 



1. PRUNTJS L. 



Flowers in lateral scaly umbels or fascicles, expanding with or before the 

 leaves. 



