DIADELPHIA DECANDRIA, 
* 
574. PSORALEA. Gen. pl. 1210. 
l. P. tota canescens; foliis breviter petiolatis trifoliatis, 
spicis laxifloris, floribus pedicellatis, calycibus villo- 
sissimis. Mich. fl. amer. 2. p. 57. 
In barren sandy fields of Carolina and Georgia, July. 
v.s. Resembles in appearance Cytisus Cajan. 
2. P. parce pubescens; foliis ternatis: foliolis lanceolatis, 
spicis oblongis, bracteis lato-cordatis longissime acu- 
minatis, leguminibus rotundatis nervoso-rugosissimis. 
— Mich. fl. amer. 2. p. 58. 
. Melilotus flore violaceo, odore remisso. Clayt. n. 103. 
Trifolium psoraloides. Walt. fl. car. 184. 
In pine-barrens : Carolina to Florida. Y. June—Aug. 
v. s. in Herb. Leconte. Flowers blue. 
3. P. pubescens, ramosissima; foliis ternatis: foliolis el- 
lipticis utrinque rugoso-punctatis, pedunculis axillari- 
. bus folio lengioribus sub-3-floris. ; 
On the banks of the Missouri. M. Lewis. 2. Sept. 
v.s. in Herb . Lewis, Flowers very small, pale blue. 
4. P. pubescens ; foliis ternatis : foliolis elongato-lanceola- 
tis, petiolis crassis, spicis axillaribus folio vix longiori- 
bus densifloris, floribus pedicellatis, bracteis pedicello 
vix longioribus, dentibus calycis coloratis, 
On the banks of the Missouri. Y. July, Aug, v. s. 
Flowers bright blue, small. 
5. P. undique argenteo-tomentosa ; foliis ternatis : foliolis 
lanceolato-oblohgis, spicis terminalibus interruptis, 
ten ovatis acuminatis, floribus suboppositis ses- 
silibus, : 
On the banks of the Missouri. XY. v. s. Flowers 
purple: the silvery tomentum gives this plant a par- 
ticularly handsome appearance. 
6. P. undique villosa; foliis digitato-quinatis: foliolis lan- 
ceolatis inzequalibus planis integerrimis, spicis axillari- 
bus densifloris, laciniis calycis lanceolatis corolla paulo 
brevioribus, leguminibus ensiformi-rostratis, radice 
fusiformi. 
On the banks of the Missouri. M. Lewis. Y. June, 
July. v. s. in Herb. Lewis, Flowers pale blue. 
Tota planta pilis longis albidis tecta. Radix fusiformis, 
- crassa, exsiccatione farinosa. Caulis erectus, subra- 
mosus, teres, sulçatus, pedalis et ultra, Folia alterna, 
4 
475 
canescens. 
melilotoides. 
tenuiflora. 
lanceolata. 
argophylla. 
esculenta, 
