380 LEGUMINOSAE 



Grooiie, Lflts. 2:42 (1910), type loc. Los Anpclcs Bay, L. Cal., Palmer. Hamosa pertcnuis Rydb. 

 Bull. Torr. Club 54:329 (1927). Var. acutirostris Jepson. A. acutirostris Wats. Proc. Am. 

 Acad. 20:3G0 (18S5), tj-po loc. Brown Ranch, Mohave Desert, S. B. ^- W. F. Parish; Jepson, Man. 

 579, fig. 572 (1925). Orvfropfs orufiros/ns Jones, Proc. Cal. Acad. ser. 2, 5:677 (1895). Aragal- 

 his acutirostris Hel. Cat. N. Am. PI. 4 (1898). IJamosa acutirostris Rydb. Bull. Torr. Club 

 54:331 (1927). 



24. OXYTROPIS DC. 



Ours cae.spitose plants with the leaves and peduncles crowded or matted on the 

 branched root-crown. Keel prolonp:ed at the apex into a slender beak. Otherwise 

 much a.s in Astrapralus. — Species 150, all north temperate regions. (Greek oxus, 

 sharp, and tropis, keel.) 



Bibliog. — Gray, A., [A revision and arrangement of the N. Am. species of] Oxytropis (Proc. 

 Am. Acad. 6:234-236, — 1864) ; A revision of the N. Am. species of the genus Oxytropis DC. 

 (I.e. 20:1-7,-1884). Greene, E. L., [Notes on Aragallus] (Pitt. 3:208-212,-1897). Nelson, 

 A., The western species of Aragallus (Erythea 7:57-64, — 1899). 



Pods erect or ascending. 



Herbage white-silky; leaves ^4 to 2% inches long. 



Pods ovate, thin-walled, 4 to 5 lines long; peduncles not surpassing the leaves 



1. 0. oreophila. 

 Pods oblong, subcoriaceous, 6 to 9 lines long; peduncles conspicuously surpassing the 



leaves 2. 0. parryi. 



Herbage viscid-pubescent; leaves 2^^ to 3V^ inches long 3. O.viscida. 



Pods deflexed; herbage silky -villous ; leaves l*/^ to 2^^ inches long 4. 0. deflexa. 



1. 0, oreophila Gray. Plants % to 1 inch high, the peduncles and leaves 

 densely matted on the branched root-crown; herbage silvery-pubescent; leaves ^2 

 to % inch long; leaflets 5 to 13, lanceolate to oblong, acute, 2 to 3 lines long; pe- 

 duncles 1/4 to 1 inch long; flowers 4 to 4V2 lines long; calyx black-hairy, its linear 

 teeth about as long as the tube; corolla purple; pods elliptic-ovate, abruptly short- 

 acute, thin-walled, distinctly inflated, conspicuously cross-wrinkled, 5 lines long, 

 2^4 to 4 lines wide. 



High montane, on rocky slopes and dry ridges, 7000 to 11,500 feet : San Ber- 

 nardino Mts. East to southern Nevada and Utah. Aug.-Sept. 



Locs. — San Bernardino Mts.: Falls Creek, L. Gardner; Mt. San Gorgonio, Blasdale. Nev.: 

 Mt. Irish, Purpus 6331. 



Refs. — Oxytropis oreophila Gray, Proe. Am. Acad. 20:3 (1885), based on spms. from the 

 Aquarius plateau, mts. of Utah, Ward, and Mt. San Gorgonio, Wright, Lemmon; Jepson, Man. 

 579 (1925). Aragallus oreophilus Nels. Erythea 7:59 (1899). 



2. 0. parryi Gray. Plants 1 to 2% inches high, the leaves and peduncles 

 densely tufted or matted on the root-crown; herbage silvery-pubescent; leaves ^ 

 to 1% inches long; leaflets 11 to 15, oblong to narrowly ovate, 1^/2 to 2 lines long; 

 peduncles scapose, % to 1% inches long, conspicuously longer than the leaves, 

 bearing at the summit 1 or 2 flowers; flowers 4 to 5 lines long; calyx strigose with 

 black and white hairs, its linear teeth nearly as long as the tube; corolla purple; 

 pods oblong, acute, densely grayish-pubescent, grooved ventrally, 6 to 9 lines long, 

 1^4 to 2 lines wide; ventral suture bearing a broad septum. 



Mountain summits, 8500 to 12,000 feet : White Mts. East to Utah, Wyoming 

 and New Mexico. June-Sept. 



Locs.— White Mts.: Sheep Mt., Duran 2597. Utah: La Sal Mts., Purpus 6574. 



Refs. — Oxytropis parryi Gray, Proc. Am. Acad. 20:4 (1884), type loc. "Rocky Mts. of 

 northern N. Mex. and Colo, near the limit of trees". Parry. Aragallus parryi Greene, Pitt. 3:211 

 (1897). 0. uralensis var. pumila Gray, Proc. Am. Acad. 6:235 (1864); not O. uralensis var. 

 pumila Ledeb. (1831). 0. arctica Bunge, Sp. Gen. Oxytr. 97 (1874) in part. 



3. 0. viscida Nutt. Stems caespitose from a stout branching root-crown, 4 to 

 8 (or 13) inches high; herbage viscid-pubescent, strongly scented; leaves 2i/2 to 

 31^ inches long; leaflets 25 to 33, oblong, revolute, acute, 2 to 3 lines long; peduncles 



