156 UNIVERSITY OF MISSOURI STUDIES [298 



197. PRUNUS L. [AMYGBALdS L. : PADC/S 

 Borckh.]. Plum. Cherry. 



504. P. Americana Marsh. Wild plum. 

 Common in glades and thickets. 



New York to Montana; Florida to Colorado. 



505. P. hortulana Bailey. Wild goose plum. 

 Fence rows and thickets. 



Illinois to Kansas; Tennessee and Alabama to Texas. 



506. P. domestica L. Common plum. 

 Occasionally spontaneous. 



Unknown in a wild state, but of Old World origin. 



507. P.Persica(L.)Sieb. &Zucc. [^. /'fr.j/^a L.]. Peach. 

 Occasionally spontaneous in yards and roadsides. 



Asia, thence to all warm lands . 



508. P. Oerasus L. Sour cherry. 



Wild rocky banks of Hinkson creek southwest; also in 

 old yards and roadsides. 



Asia Minor, thence to all temperate lands. 



509. P. serotina Ehrh. \jPadiis serotina (Ehrh.) Agardh.]. 

 Wild black cherry. 



Frequent in woods and thickets. 



Nova Scotia to North Dakota; Florida to Texas. 



510. P. Virginiana L. \Padus Virginiatia (L.) Roem.]. 

 Choke cherry. 



Rocky banks of Hinkson creek southwest. 

 Newfoundland to Manitoba and British Columbia; 

 Georgia to Texas and Colorado. 



Family 52. LEGUMINOSAE Juss. Pulse family. 



198. SOHRANOKIA (SOHRANKIA) Willd. 

 \MORONGIA Britton]. Sensitive brier. 



511. S. uncinata Willd. \M. uncinata (Willd.) Britton]. 

 Common on dry hills and in open thickets: a plant re- 

 cently gathered has remarkably long pods (H. S. Reed). 



Virginia to South Dakota; Florida to Texas. 



