170 



LEGUMINOSJE. 



with a white vexillum and a blue keel, which is united to the 

 wings. According to Mr. Douglas this is the Navet de Praire 

 of Canadian voyagers and not the P. esculenta, Pursh, p. 203. 

 no. 40. of the present volume, to which the present plant comes 

 nearest. The roots, though stringy, dry, and tough, and con- 

 taining but little farinaceous matter, are gathered and eaten by 

 the Cree Indians raw, or sometimes roasted. 

 Brachiatc Psoralea. PI. 1 to 1| foot. 



19 GLY'CINE INVOLUCRA'TA (Wall. pi. rar. asiat. 3. p. 22. 

 t. 241.) branches filiform, long, twining, pilose; leaflets oval, 

 ciliated ; racemes dense, axillary ; peduncles usually with 2 

 whorles of 3 roundish bracteas at the base. Tj . ^. G. Native 

 of Nipaul, also in Sirmore and Kamaon. Flowers white, tipped 

 with pink. 



Ini-olucraled-racemetl Glycine. Shrub tw. 



Subtribe IV. Galegece, p. 222. 



20 PETALOSTE'MON ORNA'TUM (Dougl. mss. Hook, fl. bor. 

 amer. p. 138.) spikes of flowers oblong-cylindrical; bracteas 

 longer than the calyx, which is very villous ; leaves with 2-3 

 pairs of elliptic-oblong, glabrous leaflets. !(. F. Native of 

 North-west America, frequent in the arid prairies near the Blue 

 Mountains, of Lewis's River. Bracteas subulate, hairy. Co- 

 rolla rose-coloured. This species comes near to P. carnewn, 

 Michx. p. 222. no. 2. of the present volume. 



Ornamented Petalostemon. PI. 1 foot. 



21 CARAGA'NA BU'NGEI (Led. fl. ross. alt. ill. t. 464.) 

 leaves with 2-3 pairs of broad-elliptic, distant leaflets, which 

 are cuneated at the base, but rounded and truncate at the 

 apex, ending in a spine-like mucrone, rather silky on both sur- 

 faces ; stipulas spreadingly recurved, spinescent, permanent ; 

 petioles pungent, deciduous ; peduncles usually solitary, and are 

 as well as the calyxes silky. Tj . H. Native of Altaia, in 

 the desert called Kitriac, and near the river Tschuja. Led. 

 fl. alt. 3. p. 2C4. Corolla yellow. To follow C. arborescens, 

 p. 243. no. 3. of the present volume. 



Bunge's Caragana. Fl. June. Shrub 3 to 5 feet. 



Subtribe A 7 . Astragalece, p. 247. 



22 PHA'CA ABBREVIA'TA (Led. fl. ross. alt. ill. t. 330. fl. alt. 

 3. p. 268.) plant pilose when young, but when in an adult state 

 smooth ; stems erect, simple ; stipulas lanceolate-linear, re- 

 flexed, marcescent ; leaves with 21-23 oblong, mucronate leaf- 

 lets, which are rounded at both ends ; peduncles longer than the 

 leaves ; flowers numerous, disposed in a short raceme ; corolla 

 hardly twice the length of the calyx ; legumes stipitate, 

 compressed, when young densely clothed with pili. 7. H. 

 Native of Altaia, in subalpine places at the mouth of the river 

 Abai. Flowers deep yellow. To follow P. alplna, Lin. p. 247. 

 no. 3. of the present volume. 



Short-spiked Bastard-vetch. Fl. June, July. PI. 2 feet. 



23 PHA'CA ELONGA'TA (Hook, fl. bor. amer. p. 140.) stem 

 erect, angular, pubescent, sparingly branched ; leaves with 8-10 

 pairs of oblong-cuneated, retuse leaflets, which are hoary be- 

 neath ; stipulas small, acuminated, broad at the base, lower ones 

 connected ; peduncles much longer than the leaves ; racemes 

 elongated, ' loose ; calyxes silky; legumes coriaceous, cylindri- 

 cal, curved, sessile, acute. If. . H. Native of North-west 

 America, on the plains of the Saskatchawan. Flowers small, 

 white, or cream-coloured, having the carina tipped with purple. 

 There is a smaller variety of this plant with flexuous stems. 

 This species follows P. arenaria, Pall. p. 248. no. 7. of the 

 present volume. 



Elongated Bastard-vetch. PI. 1 to 1^ foot. 



21 PHA'CA FLEXUOSA (Hook, fl. bor. amer. p. 141.) stem 



decumbent, flexuous, angular, sparingly branched ; leaves with 

 6-9 pairs of linear-oblong, obtuse leaflets, which are glabrous 

 above, but clothed with adpressed pili beneath ; stipulas 

 small, broad at the base, acuminated, lower ones connected ; 

 peduncles longer than the leaves ; racemes elongated, loose ; 

 calyxes rather silky ; legumes coriaceous, cylindrical, straight, 

 sessile, acute. Tf.. H. Native of North-west America, abun- 

 dant on elevated and dry fertile soils of the Red River and As- 

 sinaboin. Astragalus flexuosus, Dougl. mss. p. 256. no. 53. 

 of the present volume. Flowers purple, very fragrant. This 

 species follows P. Lapponica, p. 248. no. 14. of the present 

 volume. 



Flexuous-stemmed Bastard-vetch. PI. 1 foot. 



25 PHA'CA COLLINA (Hook, fl. bor. amer. p. 141.). %. H. 

 Native of North-west America, on the sub-alpine ranges of the 

 Blue Mountains. Astragalus collinus, Dougl. mss. p. 256. 

 no. 35. of the present volume. Corolla white, with a large 

 purple spot on one of the petals. Stipulas oblong, leafy. The 

 plant is remarkable for the linear leaflets. 



Hill Bastard-vetch. Fl. June, July. PI. 1 foot. 



26 PHA'CA PECTINA'TA (Hook, fl. bor. amer. p. 141. t. 54.). 

 %. H. Native of North-west America, in the pastures of the 

 Saskatchawan, and on the Red Deer and Eagle hills, bordering 

 on that river. Flowers large, white. Astragalus pectinatus, 

 Dongl. mss. p. 257. no. 53. of the present volume. 



Pec^'nfl/c-leaved Bastard-vetch. PI. decumbent. 



27 PHA'CA PODOCA'RPA (Hook, fl. bor. amer. p. 142.) plant 

 canescent, much branched, diffuse ; stems and branches striated ; 

 leaves with 6-9 pairs of broad-linear, obtuse leaflets ; stipulas 

 small, ovate, acuminated ; peduncles longer than the leaves ; 

 racemes loose ; legumes oblong, coriaceous, compressed, clothed 

 with appressed hairs, acuminated, tapering into a long stipe at 

 the base, with thickened sutures. ~if. . H. Native of North 

 America, on dry, sandy, and barren grounds, at the great falls 

 of the Columbia. Flowers middle-sized, white. This plant 

 should follow P. arenaria, p. 248. no. 7. of the present volume. 



Foot-fruited Bastard-vetch. Fl. June, Aug. PI. 1 foot. 



28 PHA'CA NIGRE'SCENS (Hook, fl. bor. amer. p. 143.) clothed 

 with obscure adpressed pili ; stems erect and decumbent, 

 branched, striated; leaves with 8-10 pairs of oblong, obtuse 

 leaflets, which are cuneated at the base ; racemes for the most 

 part longer than the leaves ; stipulas small, ovate, acutish, 

 connate at the base ; teeth of calyx a little shorter than the 

 tube ; legumes stipitate, oblong, membranous, compressed, gla- 

 brous. !{.. H. Native of North America, along the Saska- 

 cliawan to the Rocky Mountains, and as far north as Fort 

 Franklin on the Mackenzie River. Corolla white or cream- 

 coloured. The present species should follow Phaca ceespilbsa, 

 Nutt. p. 248. no. 6. of the present volume. The stems are 

 usually purplish. 



Blacldsh Bastard-vetch. PI. erect or decumbent. 



29 PHA'CA ABORIGINORUM (Hook, fl. bor. amer. p. 144.). 

 If. . H. Native of North America, from Lake Winipeg to the 

 Rocky Mountains, and as far north as Bear Lake in lat. 66. 

 Astragalus aboriginorum, Richards, p. 258. no. 61. of the pre- 

 sent volume. 



Aboriginal Bastard-vetch. PL 1 foot. 



30 PHA'CA GLABRIU'SCULA (Hook, fl. bor. amer. p. 144.) plant 

 glabrous, or with a few scattered hairs ; stem erect, nearly sim- 

 ple, striated ; leaves with 5-6 pairs of linear-lanceolate, acutish 

 leaflets ; stipulas ovate, acute, lower ones connate and larger ; 

 legume on a rather long stipe, lanceolate, falcate, compressed, 

 membranous, glabrous. If. . H. Native of North America, in 

 the valleys of the Rocky Mountains. General aspect very simi- 

 lar to the preceding species, of which it may only be a variety. 

 Corolla white or bluish, with the keel dark blue. 



