POLYPETALOUS EXOGENOUS PLANTS. 221 



middle upward; leaflets 5" ~6" long, rather thinly pubescent 

 on both surfaces, with soft appressed hairs; spikes about 

 2' long ; hrads subulate, as long as the flowers ; corolla 

 pale rose-color ; petals scarcely acute at the base, as long 

 as the vexillum. — Drummond, 



P. APHLEOIDES. Stem pubescent ; leaflets 4"-5" long, 

 nearly linear; spikes cylindrical, about 2' long, on long 

 peduncles ; bracts awned ; calyx marked with large resinous 

 glands ; ^jetals extremely narrow, acute at the base, white; 

 claw of the vexillum passing through the deep notch of the 

 calyx. — Drummond. 



P. OBOVATUM, Gray and Torry. Whole plant almost 

 woolly, with soft grayish hairs. 8tem thick ; leaflets rather 

 remote, more than ^' long, 3"-4" wide ; bracts almost con- 

 cealing the flowers, concave with a long acuminate point ; 

 vexillum pale purple, with the claw as long as the limb ; 

 teeth of the calyx subulate. Kemarkable for its large and 

 broad leaflets and very thick subsessile spike. — Drummond. 



P. viOLACEUM, Michx. Somewhat pubescent or glabrous ; 

 leaflets 2 pairs, linear, with a few glands beneath ; spikes 

 very dense, varying from globose-ovate to oblong-cylindri- 

 cal, pedunculate; ca/?/a; silky can escent ; teeth about one- 

 tliird the length of the tube ; petals oblong, obtuse at the 

 base, with short claws ; vexillum cordate ; root thick, 

 somewhat fusiform, perennial. Leaves fascicled, leaflets 

 6"-10"long ; flowers bright purplish-violet. — Drummond. 



P. EMARGINATUM, Gr. and T. Annual. Stem 2° high ; 

 leaves numerous, leaflets ^ long, deeply emarginate; 

 spikes compact, on peduncles 6-10' long ; bracts silky 

 villous, lower ones much dilated ; calyx very villous, 

 deeply 5-cleft, the segments lanceolate ; petals oblong with 

 short claws. Limbs of the vexillum somewhat 4-sided. — 

 Drummond. 



