LEGUMINOS#. (PEA FAMILY.) 45 
Flowers peduncled; corolla scarcely exceeding the calyx; leaves nearly 
sessile, 1-3-foliolate.......c.ccsececscccencuce alee .e-.-H. Purshiana. 6 
Flowers nearly sessile, not bracteate; corolla larger; leaves petioled, 3-5-foliolate; low. 
Calyx-teeth about equaling the tube, pod 5-seeded.......... sere oa H. subpinnata. 7 
Teeth much longer than the tube; pod 2-4-seeded..... 6 slats 325 H. brachycarpa. 8 
§ 3. Pod long-attenuate upward, iucurved, pubescent; stipules gland-like; leaflets 3 to 7; 
seeds 1 or 2; peduncles short or none; flowers and fruit reflexed. 
Somewhat woody; nearly smooth; stems angled; leaflets mostly 3, oblong to linear. 
Umbels sessile; teeth narrow, erect........... cece cc eee ces eceeeereeeres glabra, 9 
Peduncles short or nearly wanting; teeth usually recurved........ H, cytisoides. 10 
Peduncles shorter; teeth short and blunt..............-- ihkee secede H. juncea. 11 
Very silky-pubescent or tomentose; stems herbaceous: pod pubescent, short; umbels 
on short peduncles. 
Very pubescent throughout; flowers 3 or 4 lines long .............H. tomentosa, 12 
Less pubescent; stem smooth; flowers smaller. .... Sie bie Sie see ees H. Heermanni, 13 
l #. stipularis, Benth. Rather tall, stout, two feet high or more, glandular; leaf- 
lets 15 to 21, obovate oblong, acute and mucronate, ‘a half to an inch long; stipules large 
ovate; often fragrant. 
2. H. bicolor, Dougl. Smooth, erect and stout; leaflets 5 to 9, obovate or oblong, a 
half to an inch long; stipules rather large; peduncles longer than the leaves, 3-7-flowered, 
naked or sometimes with a small 1-3-foliolate bract at the summit; flowers nearly sessile 
yellow, the wings often white; pod slender nearly 2 inches long. 
3. H. gracilis, Benth. Much like the last; usually low and slender, the weak stems 
a span high or more; umbel with a petioled 1-3-foliolate bract; flowers yellow, keel and 
wings purplish, r 
4, H. grandiflora, Benth. Stout, 1 to 5 ft. high, more or less appressed silky- 
pubescent; leaflets 5 to 7 on an elongated rachis, 6 to 9 lines long; peduncles elongated; 
umbel 3-8-flowered, usually subtended by a single leaflet; flowers nearly sessile, 6 to 11 
lines long, yellowish or greenish white, often tinged with purple, pod slender, smooth. 
5. H. parviflora, Benth. Smooth or nearly so, stems slender, ascending, a span 
high or less; leaflets 3 to 5, obovate and very small to narrowly oblong and 6 to 8 lines 
long; bract 1-3-foliolate; flowers about 2 lines long, yellow. 
H. Purshiana, Benth. Silky-villous, rarely smooth, often a foot high or more; 
leaflets varying from ovate to lanceolate, 3 to 9 lines long; peduncles usually exceeding 
the leaves; the solitary flowers 2 or 3 lines long. 
7. H. subpinnata, Torr. & Gr. Villous or smooth, decumbent, 'a span high or less, 
leafiets half an inch long or less; flowers 3 or 4 lines long; pod linear oblong, about 
B-seeded. 1 
