Genus ij. 



PEA FAMILY. 



359 



I. Lotus corniculatus L. Bird's-foot Trefoil. Ground Honeysuckle. 



Fig. 2488. 



Lotus corniculatus L. Sp. PI. 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"-8" long, obtuse or acute ; 

 stipules similar to the leaflets, and often as large ; pe- 

 duncles elongated, sometimes 4-6' long, umbellately 

 3-l2-flo\vered ; calyx-lobes acute, as long as the tube, 

 or shorter ; corolla bright yellow, 6"-9" long, or the 

 standard reddish ; pods linear, about i' long, spreading, 

 several-seeded. 



In waste places and on ballast, Nova Scotia, New Bruns- 

 wick, and about the seaports of the Eastern and Middle 

 States to Washington, D. C. Adventive from Europe. Na- 

 tive also of Asia, and widely distrilDUted as a weed. Crow- 

 toes (Milton). Cross-toes. Cat's-clover. Sheepfoot. Bird's- 

 eye. Ladies'-fingers. Devil's-fingers. Shoes and stockings. 

 Claver. June-Sept. 



Bloom- fell. 



14. HOSACKIA Dougl. : Benth. Bot. Reg. 15 : pi. 12^7. 1829. 



Herbs, mostly with pinnate leaves, but these sometimes with only i leaflet or 3, as in the 

 following species, the umbellate or solitary, yellow, red or rose-colored flowers on bracted 

 axillary peduncles. Calyx-teeth nearly equal. Petals free from the stamen-tube, the stamens 

 diadelphous ; standard ovate or suborbicular, wings oblong or obovate; keel incurved, mostly 

 pointed or beaked. Pod linear, flattened or nearly terete, not stipitate. [In honor of David 

 Hosack, 1769-1835 professor of botany and materia medica in Columbia College.] 



About 50 species, natives of North America, all except h. Helleri Britton of North Carolina, 

 and the following species, confined to the western part of the continent. Type species: Hosackia 

 bicolor Dougl. 



I. Hosackia americana (Xutt.) Piper. Prairie Bird's-foot Trefoil. Fig. 2489. 



Trigonella americana/l^utt. Gen. 2: 120. 1818. 

 Lotus sericcus Pursh.' Fl. Am. Sept. 489. 1814. Not DC. 1813. 

 Hosackia Purshiana Benth. Bot. Reg. under pi. I2S/. 1829. 

 Lotus americanus Bisch. Litt. Ber. Linnaea 14: 132. 1840. 

 Hosackia americana Piper, Contr. U. S. Nat. Herb. 11: 366. 

 1906. 



Annual, erect, branched, villous-pubescent, or glabrate, 

 io'-2o' high. Leaves 3-foliolate, or the upper sometimes 

 l-foliolate, sessile or the lower on petioles about i" long; 

 stipules minute or none; middle leaflet slightly longer- 

 stalked than the lateral ones, oblong, the lateral lanceolate, 

 rounded at the base, s"-8" long, 2"-3" wide; peduncles 

 axillary, i-flowered, g"-i2" long in fruit, leafy-bracted at 

 the summit ; flowers rose-color, about 2" long, the standard 

 darker-veined; calyx-lobes linear, about twice the length of 

 the tube ; pods straight, about i' long, acute, glabrous, 4-7- 

 seeded, deflexed. 



In dry soil. Minnesota to North Dakota, Idaho, ^ Missouri, 

 Arkansas, Texas, New Mexico and Sonora. Recorded as introduced in Illinois. Wild vetch. 

 Summer. 



15. ANTHYLLIS [Tourn.] L. Sp. PI. 719- I753- 



Herbs, or some species shrubby, with pinnate leaves, the stipules small or none, and 

 bracted capitate flowers. Calyx somewhat swollen, persistent, s-toothed. Petals long-clawed ; 

 standard and wings ovate; keel incurved, shorter than the wings, obtuse or short-pointed; 



