228 
IOWA ACADEMY OF SCIENCES. 
POMACES. 
Malus Juss. Wild Crab-apple. 
818. M. ioensis (Wood) Britton. ( Pyrus ioensis Bailey.) 
Rare in woods. 
Amelanchier Medic. June Berry. 
814. A. alnifolia Nutt. Frequent in woods. A western 
species rarely found in this region. 
Crataegus L. Thorn Apple. 
815. C. punctata Jacq. Rare in woods near Iowa Lake. 
811). C. coccinea L. Our most common species. 
317. C. mollis (Torr. and Gray.) Scheele. (C. subvillosa 
Schrad.) Frequent in timber. Our thorn apples 
are much confused and perhaps include several 
of the recently published species. 
DRUPACE^E. 
Prunus L. 
818. 
P. 
americana Marsh. Wild Plum, 
in open woods. 
Very 
common 
319. 
P. 
virginiana L. Choke Cherry, 
in open woods. 
Very 
common 
320. 
P. 
serotina Ehrh. Wild Black Cherry. 
Rare in 
woods west of Estherville. 
C-ESALPINACEA5 
Cassia L. Sensitive Pea. 
321. C. chamcecrista L. Common in dry sandy soil. 
Sometimes cultivated. 
PAPILIONACE^E. 
Baptisia Vent. Wild Indigo. 
322. B. bracteata Ell. (B. leucophcea Nutt.) Common; 
prairies and border of woods. 
Melilotus J uss. 
323. M, alba Desv. White Sweet-clover. Frequent; 
adventive from Europe. 
