190 
DIADELPHIA DECANDRIA. 
corolla obcordate, white ; longer than the calyx. Filaments 10, white, 
monadelphous. 
Grows in damp soils. 
Flowers June — July. 
ERYTHRINA. 
Calyx 2-lobatus. 
Corollce vexillum lon- 
gissimum, lanceola- 
tum. Legumen toru- 
losum. 
1. Herbacea, 
E. puraila ; foliis 
ternatis,rhombeis, gla- 
bris ; spicis longissi- 
mis ; caule herbaceo, 
aculeato. 
Sp. pi. 3. p. 912. Walt. p. 180. 
Nutt. 2. p. 92. 
Gen. Pl. 1163. 
Calyx 2-lobed. 
Vexillum of the Co- 
rolla very long, lan- 
ceolate. Pod torn- 
lose. 
Small ; leaves ter- 
nate, rhomboidal, gla- 
brous ; spikes very 
long ; stem herbace- 
ous, prickly. 
Mich. 2. p. 61 . Pursh. 2. p. 467". 
Root tuberous, very thick, Stem herbaceous, 2—4 feet high, glabrous, 
streaked with purple, armed with a hooked prickle at the base of each pe- 
tiole. Leaves alternate, compoundly trifoliate, leaflets dilated towards the 
base and almost hastate, glabrous, a little glaucous underneath, and hairy 
on the veins. Flowers in terminal spikes, the buds alternate and 3 -flow- 
ered. Calyx cylindrical, truncated, slightly emarginate above, under- 
neath furnished with a small tooth. Vexillum of the corolla nearly 2 in- 
ches long, emarginate, with the sides compressed bright scarlet, wings and 
two leafed keel, scarcely as long as the calyx, paler than the vexillum. 
Stamens diadelphous, unequal, as long as the vexillum. Seeds many in 
each pod, bright scarlet. 
Grows in rich light soils. 
Flowers in May. 
LUPINUS. Gen. Pe. 1176. 
Calyx 2-labialus. 
Anther ce 5 oblongae, 5 
subrotundae. Legu- 
men coriaceum. 
Calyx bilabiate. 
Anthers 5 oblong, 5 
nearly round. Pod 
coriaceous. 
