'9//-12/ long in fruit, leafy-bracted at the summit; flowers 
PAPILIONACEAE, {Vor. I. 
1. Lotus corniculatus L. Bird’s-foot Trefoil. 
Ground Honeysuckle. Bloom-fell. (Fig. 2084.) 
Lotus corniculatus I, Sp. Pl. 775. 1753+ 
Perennial from a long root, appressed-pubescent or 
glabrate. Stems slender, decumbent, or ascending, 
3/-2° long; leaves 3-foliolate, short-petioled; leaflets 
obovate, oblanceolate or oblong, 3/’-5’’ long, obtuse 
or acute; stipules similar to the leaflets, and often as 
large; peduncles elongated, sometimes 4’—6’ long, um- 
bellately 3-12-flowered; calyx-lobes acute, as long as 
the tube, or shorter; corolla bright yellow, 6/’/-9’’ 
long, or the standard reddish; pods linear, about 1/ 
long, spreading, several-seeded. 
In waste places and on ballast, New Brunswick, and 
about the seaports of the Eastern and Middle States.’ Ad- 
ventive from Europe. Native also of Asia, and widely 
distributed as a weed. Crowtoes (Milton), Cat’s-clover, 
Sheepfoot. June-Sept. 
2. Lotus Americanus (Nutt.) Bisch. Prairie Bird’s-foot pee (Fig. 2085.) 
Trigonella Americana Nutt. Gen. 2:120. 1818. 
Lotus sericeus Pursh, Fl. Am. Sept. 489. 1814. Not DC. 1813. 
FHosackia Purshiana Benth. Bot. Reg. under p/. 7257. 1829. 
Lotus Americanus Bisch. Litt. Ber. Linnaea, 14: 132. 1840. 
Annual, erect, branched, villous-pubescent, or glabrate, 
10-20’ high. Leaves 3-foliolate, or the upper sometimes 
1-foliolate, sessile or the lower on petioles about 1/’ long; 
stipules minute or none; middle leaflet slightly longer- 
stalked than the lateral ones, oblong, the lateral lanceo- 
late and more or less inequilateral, rounded at the base, 
5/’-8’’ long, 2’/-3’’ wide; peduncles axillary, 1-flowered, 
rose-color, about 2’” long, the standard darker-veined; 
keel acute; calyx-lobes linear, about twice the length of 
the tube; pods linear, straight, about 1’ long, acute, 
glabrous, 4-7-seeded, deflexed at maturity. 
In dry soil, Minnesota to Missouri, Arkansas, New Mexico 
and Sonora. Summer. 
14. PSORALEA L., Sp. Pl. 762. 1753- 
Herbs or shrubs, with dark glands or pellucid dots, 1-5-foliolate leaves, and purple blue 
pink or white flowers, mainly in spikes or racemes. Stipules broad. Calyx-lobes equal or 
the lower longest, or the two upper ones sometimes united. Standard ovate or orbicular, 
clawed; wings oblong or falcate; keel incurved, obtuse. Stamens monadelphous or diadel- 
phous; anthers uniform. Ovary sessile or short-stalked, 1-ovuled. Pod ovoid, short, inde- 
hiscent, 1-seeded. [Greek, scurfy, from the glandular dots, whence the name Scurfy-pea. ] 
About 110 species, of wide geographic distribution. In addition to the following, about 20 
others occur in the western United States. 
Teaves digitately 3-5-foliolate (leaflets all from the same point). 
Plants leafy- stemmed. 
Flowers small, 2'’-4'' long. 
Pods subgiobose. 
Leaflets narrowly oblong. 1. P. lanceolata. 
Leaflets, except those of basal leaves, filiform-linear. 2. P. micrantha. 
Pods ovoid, or ovate. 
Pods with a short, mostly abrupt beak. 
Flowers few, scattered in slender elongated racemes. 3. P. tenutflora. 
Flowers numerous, clustered, or crowded in racemes. 
Leaflets oblong-obovate. 4. P. obtusiloba. 
Leaflets oblong. 5. P. floribunda. 
Pods with a slender sharp or elongated beak. 
Leaflets linear; flowers in loose elongated racemes. 6. P. linearifolia. 
Leaflets linear-lanceolate, oblong, oblanceolate or obovate; flow ers spiked. 
Leaflets oblanceolate or obovate; pubescence gray. . P. collina. 
Leaflets linear-lanceolate or oblong; pubescence silv > 
Leaflets linear-lanceolate; calyx inflated in fruit. P. digitata. 
Leaflets oblong; calyx not inflated in fruit. * P. argophylia. 
Flowers large, 6'’-8’’ long, densely spicate. 10. P. cuspidata. 
