434 
BOTANY. 
(a.) Peduncles 1-4-floweretl, elougated ; pedicels very short; stipules scarious, suiall ; flowers yellow, 
claws a little exserted, keel broad and very obtuse. 
14. H. LATHYROiDES, Dur. & Hilg. Low, ashy-puberuleut ; leallets 5-7, not crowded, linear-lanceo- 
lato, acute at botb ends ; bract simple or wanting ; calyx-teetli broad-subulate, shorter than the tube. — 
California. 
15. H. AXGUSTiFOLiA, G. Don. Slender; leaflets 5-9, obovate or linear, short, often canescent 
beneath; peduncle 1-2-liowered, bract 3-foliolate ; calyx-teeth slender, nearly equaling the tube. — Mexico, 
(b.) Peduncles nmbellately many-flowered, mostly shorter than the leaf, bracteate only below the 
apes ; stipules scarious or foliaceous ; flowers rather small, greenish-white or yellowish, keel 
slightly curved, very obtuse, a little shorter than the wings ; calyx-teeth not half as long as the 
tube ; leaflets 9-21, oval or oblong. 
IG. H. INCAXA, Torr. Low, very hoary -villous ; bract mostly 5-foliolate, near the umbel. — California. 
17. H. STiPULARis, Beuth. Eather tall and stout, villous above, leaflets glabrate ; stipules foliaceous, 
the upper sometimes nearly scarious ; bracteal-leaf much below the umbel, 3-9-foliolate.— California. 
18. H. CRASSiFOLiA, Benth. Tall and stout, stems nearly glabrous ; leaflets 9-15, thickish, puberulent 
or glabrate ; bract mostly 3-foliolate and above the middle of the peduncle ; calyx-teeth very short.— 
Oregon and California. 
(c.) Umbels 4-12- (or the lowest 1-3-) flowered, on peduncles usually equaling or exceeding the 
leaves ; bract at the top or none ; stipules scarious ; flowers i' long or more, yellow with white or 
purple, the keel abruptly incurved, acutish, nearly equaling the wings ; calyx-teeth at least nearly 
half as long as the tube ; leaflets 5-11. 
19. H. OCLOXGIFOLIA, Benth. Apiiressed-pubescent ; leaflets 9-11, narrowly oblong ; bract simple ; 
calyx-teeth a little shorter than the tube ; otherwise like the next.— California. 
90. H. BicoLOR, Dougl. Glabrous, rather tall ; leaflets 5-9, obovate or oblong, bract none or rarely 
small, simple ; calyx-teeth about half as long as the tube ; keel often white.— Oregon and California. 
21. H. GRACILIS, Benth. Glabrous, more slender, 8-12' high, weak and spreading; stipules large; 
leaflets 5-7, often 3 below, obovate-cuneate ; bract 3-foliolate, petioled ; calyx-teeth nearly equaling the 
tube ; keel and wings purplish. — California. 
(d.) Peduncles several- (or the lowest 1-3-) flowered; bract at the apex, 1-3-foliolate, or none; 
stipules glandular, often deciduous ; claws slightly, if at all, exserted ; keel straightish, dilated 
above ; legumoH glabrous ; leaflets 5-7.— California. 
22. H. GRAXDuxoRA, Benth. Usually tall, 1-5° high, more or less soft-pubescent ; leaflets oval or 
oblong ; peduncles elongated ; flowers 7-11" long, yellowish or greenish-white and purplish; calyx-teeth 
subulate, about equaling the tube or shorter ; keel very much shorter than the ample wings. 
23. H. MARITIMA, Nutt. Annual, diffusely spreading, strigoso-puberulent or nearly glabrous ; stems 
8-12' long ; leaflets mostly 6, on a somewhat dilated rachis, succulent, oval or obovate, 4-6" long ; pedun- 
cles about equaling the leaves, 3-5-flowered ; calyx-teeth linear-subulate, rather exceeding the tube; 
flowers 4-5" long, bright-yellow, keel broad, about equaling the wings. 
Leaves pinnate, rachis more or less dilated; stipules glandular; peduncles 1- (rarely 2-) 
flowered; claws not exserted, that of the vexillum short, approximate to the others. Small 
diffiise annuals ; flowers small, yellow. 
24. H. STRicovv, \utt. Strigosely pubescent, diff-usely spreading or ascending ; leaflets 4-9, linear- 
oblong or obovate, 1-5 " long ; peduncles equaling or exceeding the leaves, the bract at the apex 1-5-foli- 
olate or wanting; flowers 2-5" long, keel broad, nearly straight, very obtuse, much shorter than the 
wings, vexillum tapering into a short claw.— California. 
2.-.. H. r vRviFLORA, Benth. Glabrous, pale ; leaflets 3-6 ; peduncles 2-8" long ; bracts 1-3-foliolate ; 
linw.rs barely 2 long, keel narrow and indexed above, acutish, nearly equaling the wings; vexillum 
subcordate. — Oregon, California. 
^ 3. MICROLOTUS, Benth. Legume as in § 2, sometimes barely oblong; keel attenuated upward, 
falcate, mostly acute, equaling or exceeding the wings; claws not exserted, that of the vexillum 
short not apart. Annual; leaflets 1-5, the lower scattered, rachis more or less dilated; stipules 
glandular ; flowers small, yellow, not umbellate. 
{«.) Peduncles exceeding the leaves, 1-flowered, with -a simple bract ; leaves subsessile, pinnately 
coroUa sometimes simple above ; calyx-teeth much exceeding the tube, nearly equaling the 
26. H. PcRSHiAXA, Benth. Variable. See page 63. 
(fe.) Flowers subsessile and mostly solitary in the axils, bractlcss ; corolla exceeding the calyx ; leaf- 
