29 
MEDIC AGO, Tourn. 
220. M. lupulina, L. Black Medick. Nonesuch. 
ts> Occasionally found in waste places and near gardens. May 20th — 
June, (B. P.) 
PSORALEA, L. 
221. P. tenuiflora, Ph. Scurvy Pea. 
P. floribunda, Nutt. 
Calumet Region. Egondale. Palatine, Babcock. Chicago, Univer- 
sity of Chicago Herb. 
AMORPHA, L. 
f 222. A. canescens, Nutt. Lead Plant. Wild Tea. 
Dry prairies and banks; frequent. July— August. 
223. A. fruticosa, L. False Indigo. River Locust. 
Banks; not common. June — July. 
Hyde Park and vicinity. Northward. 
PETALOSTEMON, Michx. 
-f 224. P. violaceus, Michx. Purple Prairie Clover. 
Dry prairies and railroad banks; common. June — July, often as 
late as September. & u. - 
Along the lake shore, south of Whiting, Ind., a low form is frequent, 
the stem inclining to diffuse; flowers rose purple or violet, rarely 
the calyx is softly pubescent and not hoary. 
'f 225. P. eandidus, Michx. White Prairie Clover. ^ 
Dry prairies, found with the last; frequent. July. 
TEPHROSIA, Pers. 
226. T. virginiana, Pers. Goat’s-Rue. Catgut. 
Dry sandy soil; common. June — July. 
South Chicago and south. 
Odd leaflet sometimes mucronate, usually emarginate; stem 
branched; standard yellowish to greenish white; keel rose-color to 
white, blotched with rose-color, Pine Station, Ind., 1889. 
ROBINIA, L. 
227. R. pseudacacia, L. Common Locust. False Acacia. 
Naturalized; frequent. June. (B.) 
ASTRAGALUS, Tourn. 
228. v A. canadensis, L. Milk Vetch. 
Moist woods along streams and lakes ; frequent. July. 
Mainly in sandy soil along the lake shore. 
Riverside. Maywood. Riverdale. Rogers Park. Thorn Creek and 
Thornton, Hill. 
Forms with loose spikes are not infrequent. 
i 
