Alpini. 135 



Mts. Oregon and northward and eastward to Colorado but not foiind 

 in Utah so far. A. Macounii is a form intermediate between this 

 and A. Labradoricus and is the more common northern form. It 

 occurs in the mountains of Alberta and along the border in British 

 Columbia and as far westward as Upper Marias Pass in Montana and 

 Oroville in the Cascades, Washington, but is mostly replaced in the 

 northwest by A. Bourgovii with connate stipules. In rocky meadows. 



87. Astragalus aboriginum Rich, in Frankl. Jour. App. 18 (1823). 

 Phaca Hooker, Homalobus and Atelophragma Rydberg. Pods half- 

 oval, about 2 cm. long exclusive of the stipe, and about 5 mm. high, 

 triangular acute at tip and apiculate, and also acuminate into the 

 tapering stipe which is longer than the calyx, about smooth and 

 brownish when ripe, opening all along the ventral suture. Cross 

 section rather ovate. Flowers 7-12 mm. long, stubby, capitate, some- 

 times white. Banner abruptly arched to nearly erect at end of calyx, 

 fleshy, about 2 mm. longer than keel, oval, 3-4 mm. long, with sides 

 reflexed about 1 mm. wide. Wings arched to nearly erect, rather cu- 

 neate and lobed at tip and about 2 mm. wide, about 1 mm. longer 

 than keel and 1 mm. shorter than banner. Keel with base generally 

 arched a little and tip triangular or deltoid and at least abruptly 

 erect, about 3 mm. high. Calyx tube hardly 2 mm. long, obliquely 

 campanulate. rather narrowed below and inserted near the lower 

 corner, the base straight and upper side arched, cleft deeper above, 

 the teeth nearly as long as tube and nigrescent with black wool. 

 Pedicels about 2 mm. long and shorter than the hyaline bracts which 

 nearly equal the calyx tube. Peduncles sulcate, in fruit about twice 

 as long as leaves and the fruiting rachls as long or longer than the 

 peduncles. Leaves mostly sessile, wide, 4-10 cm. long. Leaflets 5-6 

 nairs, linear in the type, about 2 cm. long, 2-4 mm. wide, rather distant 

 in the type and ascending, acutish, often subalternate, variously hoary 

 to almost smooth, with straight and appressed hairs, pubescence decid- 

 uous. Stipules about 5-7 mm. long, conspicuous. Stems slender 

 and nearly erect in the type, a foot or two long, from a thick and yel- 

 low root. Much used by the Indians for food. Frequent in open and 

 rocky woods from Lake Winnepeg to British Columbia in the rocky 

 Mountains to the Yukon. Middle and Upper Temperate life zones. 



Astragalus aboriginum van. glabriusculus (Hook.) Rydberg Cont. 

 Nat. Herb. 3 492 (1896). Phaca glabriusculn Hooker Fl. Bor. Am. 1 144 

 (1830.) Astragalus glabriusculus (Hook.) Gray and var. major Gray. 

 A. Forwoodii Watson. This is the common form with narrowly ellipti- 

 cal leaflets nearly or quite smooth. From Veta Pass Colorado to the 

 Fast Humboldt Mts. Nevada and northward. Rare in the Great Basin. 

 Mt. Belknap Utah. A. Forwoodii is an intermediate form. 



Astragalus aboriginum var. fastigiorum' n. var. This is a densely 

 congested form with many nearly prostrate stems with few nodes 

 and sharp leaflets densely congested making the leaf about as broad 

 as long, and with inflorescence often longer than the stems, and pub- 

 escence variably woolly to straight. Alpine or subalpine, most common 

 on high ridges from Montana to the Wallowa Mts. Oregon. The 

 typo is my material from Mr. Haggin Montana, and to it I refer 

 Cusick's from the Wallowas. 



88. Astragalus Cottoni n. sp. A. Olymplcus Cotton Terr. Bull. 29 

 573 (1902). Pods with body 2.5 cm. long and about 1.2 cm. wide, nearly 

 half-oval but with the dorsal suture a little arched, otherwise it would 

 be half-oval, rounded at tip and with a minute recurved apiculation 

 in line with dorsal suture, triangular at base and acutish where it ends 

 in the filiform stipe which is twice the calyx and about 6 mm. long, 

 minutely pubescent and papery, nearly the shape of A. leucopsis but 

 with sutures reversed, the ventral suture being greatly arched, pods 

 ascending from a pendent calyx. Dorsal suture intruded as a thin and 



