66 
IOWA ACADEMY OF SCIENCE 
MELILOTUS (Tourn) Hill. 
526. Melilotus officinalis (L.) Lam. Yellow Sweet Clover. Plenty in 
waste places. 
527. Melilotus alba Desr. White Sweet Clover. A common roadside 
weed. 
MEDICAGO (Tourn) L. 
528. Medicago sat'iva L. Alfalfa. Common as an escape along rail- 
ways. 
529. Medicago lupulina L. Black Medick. Locally plenty near Iowa 
City. 
HOSACKIA Dougl. 
530. Hosackia americana (Nutt.) Piper. Prairie Bird’s-foot Trefoil. 
Not scarce in sandy soils. 
531. 
532. 
533. 
534. 
PSORALEA L. 
Psomlea tenuiflora Pursh. Few flowered Psoralea. Scarce in 
sandy soils. 
Psoralea argophylla Pursh. Silvery Psoralea, Abundant in open 
places. 
AMORPHA L. 
Amorpka canescens Pursh. Lead Plant or Shoe Strings. Abun- 
dant in woods, especially in dry soils. 
Amorpha fruiticosa L. False Indigo Bush. Abundant along 
streams. 
DALEA Juss. 
535. Dalea alopecuroides Willd. Pink Dalea. Locally abundant near 
Iowa City in sandy soil. 
PETALOSTEMON Michx. 
536. Petalostemon purpureum (Vent.) Rydb. Violet Prairie Clover. 
Abundant in open places. 
537. Petalostemon candidum Michx. White Prairie Clover. Abundant 
in open places. 
TEPHROSIA Pers. 
538. TepJirosia virginiana (L.) Pers. Goat’s Rue or Catgut. Scarce 
in sandy and open woods. 
ROBINA L. 
539. Eobinia pseudo-acacia L. Common Locust or False Acacia, Cul- 
tivated and escaped. 
