256 



LEGUMINOS^E. CXXXI. ASTRAGALUS. 



Cracca-like Milk- Vetch. PI. diffuse. 



31 A. PKOSTKA'TI s(Hook, in Beech, voy. p. 18.) plant diffuse ; 

 leaflets pubescent, obtuse ; stipulas concrete, but free from the 

 petiole ; racemes pedunculate, much longer than the leaves ; 

 flowers loose, almost sessile ; calyxes clothed with black pubes- 

 cence. If.. G. Native of Chili, about Conception. Flowers 

 purple. 



Prostrate Milk- Vetch. PI. prostrate. 



3.2 A. GRA'CILIS (Nutt. gen. amer. 2. p. 100.) plant erect, 

 slender, pubescent ; leaflets oblong-linear, remote ; racemes 

 pedunculate, longer than the leaves ; legumes very short, droop- 

 ing, elliptic-ovate, rather triquetrous, pubescent, 1 -celled, usually 

 containing 4 seeds. I/ . H. Native of North America, on the 

 plains on the banks of the Missouri. A. tenellus, Pursh. fl. amer. 

 sept. '2. p. 473. E'rvum multiflorum, ibid. p. 739. Dalea 

 parviflora, ibid. p. 474. according to Nuttall. Psoralea parvi- 

 flora, Poir. suppl. 4. p. 590. Flowers pale purple. 



Slender Milk-Vetch. Fl. June, July. Clt. 1821. PI. 2 ft. 



33 A. FLEXUOSUS (Doug, xnss.) plant erect, flexuous, downy 

 in a young state ; stipulas distinct ; leaflets distant, linear, ob- 

 tuse, beset with close-pressed hairs beneath ; flowers distant, 

 racemose ; calyx smoothish ; bracteas not much longer than the 

 pedicels. If. . H. Native of North America, near the Colum- 

 bia river. Flowers purple. Plant with the habit of V icla crdcca. 



l r ar. ft, alba (Dougl. inss.) flowers white. 



Flexuoits-stemmed Milk- Vetch. PI. 1 foot. 



31 A. IXFLE'XUS (Dougl. mss.) plant white and woolly ; steins 

 flcxuous ; stipulas distinct ; leaves with numerous pairs of ob- 

 long-lanceolate leaflets ; racemes pedunculate, longer than the 

 leaves ; flowers remote ; bracteas subulate, longer than the 

 tube of the calyx ; legumes curved upwards, very woolly. 

 "U. H. Native of North America, on the banks of the Colum- 

 bia river. Flowers large, purple. 



hiflexed-podded Milk-Vetch. PI. 1 foot. 



35 A. COLLI V NUS (Dougl. mss.) plant puberulous, erect ; sti- 

 pulas joined ? leaves with numerous pairs of obovate-lanceolate 

 emarginate leaflets ; racemes on long peduncles ; flowers dis- 

 tant ; bracteas subulate, twice the length of the pedicels ; le- 

 gumes straight, between terete and compressed, y.. H. Native 

 of North America, near the Columbia river. Flowers purple. 



Hill Milk- Vetch. PI. 1 to 2 feet. 



36 A. SUCCULE'NTUS (Rich, in Frankl. trav. p. 226.) plant 

 prostrate, pubescent ; leaflets 21-25, oblong-obovate, slightly 

 en.arginate ; stipulas distinct ; racemes shorter than the leaves ; 

 flowers remote ; bracteas ovate, acute, longer than the pedicel ; 

 calyx beset with black hairs. l/.H. Native of North America, 

 in the vicinity of the Saskatchawan river, and in the Arctic re- 

 gion. Lindl. bot. reg. 1324. Flowers large, purplish, with an 

 oblong vexillum. 



Succulent Milk-Vetch. Fl. June. Clt. 1826. PI. prostrate. 



37 A. SUBULA'TUS (Bieb. fl. taur. no. 1480. but not of Desf.) 

 plant diffuse and hoary from white pili ; leaflets linear ; racemes 

 pedunculate, loose, longer than the leaves ; the lower flowers 

 remote ; legumes subulate, triquetrous, rather arched, erectish, 

 5 times the length of the calyx. 1. H. Native of Tauria and 

 Siberia, in fields. A. subuliformis, D. C. astr. no. 33. 



Var. a, major (D. C. prod. 2. p. 284.) flowers approximate, 

 purple. Pall. astr. t. 20. 



Var. ft, macilentus (D. C. 1. c.) flowers fewer, remote, and 

 purple. Pall. astr. t. 20. 



Var. y, Tartaricus (D. C. 1. c.) flowers fewer, and cream- 

 coloured. Native of Caucasus, on the banks of the Volga and 

 the Don. Perhaps a distinct species. 



Subulate-podded ^ Milk- Vetch. Fl. Ju. Jul. Clt. 1 820. PL dif. 



38 A. CORNICULA'TUS (Bieb. pi. ross. cent. 1. t. 45. ex suppl. 

 fl. taur. 492.) plant procumbent, suffruticose, hoary, and pilose ; 



leaflets linear ; peduncles longer than the leaves, few-flowered ; 

 flowers umbellate ; legumes subulate, triquetrous, rather arched, 

 and much spreading. If.. I?. H. Native of Bessarabia, about 

 Odessa, and of the south of Podolia. Flowers purple. 

 //brned-podded Milk-Vetch. PI. procumbent. 



39 A. CERATOI'DES (Bieb. suppl. 492.) plant depressed, 

 clothed with silky villi ; leaflets oblong-elliptic ; peduncles longer 

 than the leaves; racemes somewhat capitate ; legumes subulate, 

 triquetrous, erect, 4-times longer than the 'calyx, clothed with 

 adpressed bristles. !{.. H. Native of Siberia, on the Altaian 

 mountains. A. subulatus Altaicus, Pall. astr. no. 27. t. 20. A. 

 Flowers purple. 



Horn-ake-jto&deA Milk- Vetch. PL depressed. 



40 A. MACROLOBUS (Bieb. suppl. 493.) plant depressed, clothed 

 with white adpressed hairs ; leaflets oblong-elliptic ; peduncles 

 rather longer than the leaves ; racemes somewhat capitate ; le- 

 gumes subulate, triquetrous, erect, beset with adpressed bristles, 

 thrice the length of the calyx. If.. H. Native of Siberia, on 

 the Altaian mountains, and on the banks of the Yenesee, in the 

 Kirghisean-steppe. Flowers white. 



Long-podded Milk-Vetch. PI. depressed. 



41 A. VIRGA'TUS (Pall. astr. t. 18. exclusive of the synonymes,) 

 plant erect, suffruticose, rather canescent ; leaves with about G 

 pairs of linear-lanceolate acute leaflets ; racemes spicate, much 

 elongated ; the lower flowers very remote ; legumes oblong, tri- 

 quetrous, twice the length of the calyx. T? . If. . H. Native of 

 Hungary, Tauria, Tartary, at the Volga, and at the Caspian sea, 

 in sandy places. A. varius, Gmel. jun. trav. 2. p. 116. t. 17. 

 D. C. astr. no. 34. A. virgalus, Bieb. fl. taur. and suppl. no. 

 465. Flowers purple. 



far. ft, I'ralens/s (D. C. prod. 2. p. 285.) stems shorter than 

 the peduncles ; racemes few-flowered. ^ . l/.H. Native of 

 the Ural mountains. A. subulatus, Uralensis, Pall. astr. t. 20. 

 C. ex Bieb. suppl. 493. Perhaps a proper species. 



Tn-'iggy Milk-Vetch. Fl. May, Aug. Clt. 1806. PI. 1 to 

 3 feet. 



42 A. HYRCA'NUS (Pall. astr. no. 29. t. 22.) plant erect, suf- 

 fruticose, pubescent; leaves with 3 pairs of linear acute leaflets; 

 racemes usually 5-flowered, hardly longer than the leaves ; le- 

 gumes oblong, mucronate, villous, twice the length of the calyx. 

 If. . fj . H. Native on the shores of the Caspian sea, at Derbent. 

 Flowers purple. Perhaps only a variety of A. virgatus accord- 

 ing to Bieberstein. 



Hyrcanian Milk-Vetch. PI. 1 to 2 feet. 



43 A. BRACHY'LOBUS (D. C. prod. 2. p. 285.) plant erectish ; 

 shrubby at the base, clothed with adpressed silky white down ; 

 leaves with 2-3 pairs of linear acute leaflets ; racemes peduncu- 

 late, much longer than the leaves, 6-8-flowered ; legumes oblong, 

 pubescent, mucronate by the style, hardly longer than the calyx. 

 ^ . H. Native of Siberia, at Lake Inderskoi. Flowers purple? 

 Allied to^. virgatus according to Fischer. Leaflets 12-15 lines 

 long. 



Short-podded Milk-Vetch. PI. 1 foot. 



44 A. A'NNUUS (D. C. astr. no. 25.) plant rather diffuse, and 

 rather glabrous ; leaflets linear ; racemes longer than the leaves ; 

 flowers spreading ; vexillum twice the length of the wings. G 

 H. Native country as well as the legumes unknown. Perhaps 

 belonging to a different section of the genus. 



Annual Milk -Vetch. PI. diffuse. 



45 A. BIFLORUS (Viv. fl. lyb. 44. t. 20. f. 1.) plant erect, 

 clothed with canescent hairs ; stipulas very short ; leaves with 5-6 

 pairs of elliptic leaflets ; peduncles longer than the leaves, usually 

 bearing only 2 flowers ; calyx covered with stiff black hairs. 

 O- H. Native of Cyrenaica. Flowers blue. The legume 

 being unknown, the place which the plant should occupy in the 

 genus is doubtful. 



