66 BOTANY. 



incurved. — Evidently a quite variable species, including not only possibly the 

 last species and, certainly, A. inepius, Gray, but also A. Fremontii, T. & Gr., 

 and more doubtfully A. CouUeri,- Bentb., (= J. Arthu-Schottii, Gray.) The 

 flowers and fruit in all are essentially identical, but the legume of the last 

 species is more densely pubescent and more coriaceous. The Var. Jlori- 

 bundus, Gray, is the ordinary well-developed form. Reported from the in- 

 terior of Oregon and "Washington Territory, and from Nevada, (Anderson.) 

 Frequent in Western Nevada ; 5-8,000 feet altitude ; May-June. (254.) 



Var. Feemonth. (A. Fremontii, T. & G., Gray's Rev., I. v., 194.) More 

 or less hoary with appressed hairs ; stems often somewhat flexuous ; stipules 

 very small; flowers smaller and in rather loose spikes, ochroleucous or tipped 

 with purple ; legume usually smaller and somewhat hirsute. — In the imma- 

 ture pod the septum is often incomplete ; a low starved form, confined to the 

 valleys. Collected by Fremont in Northern Arizona, and by Cooper at Fort 

 Mohave. Frequent in Nevada from the valley of the Truckee to Reese 

 River. A. CouUeri, Benth., an older species from. Southern California and 

 Arizona, may be a still more hoary-pubescent form, with a rather small and 

 more chartaceous legume. (255.) 



AsTKAGALUs PLATYTEOPis, Gray. Proc. Amer. Acad., 6. 526. Dwarf 

 (2-3' high) and alpine, scarcely caulescent, rhizomas elongated and much 

 branched, silvery-sericeous; stipules ovate, acuminate; leaflets 3-6 pairs, 

 3-4" long, obovate ; peduncles scapelike, equaling the leaves, capitately 

 few-flowered; calyx-teeth subulate, a little shorter than the campanulate 

 tube ; corolla 3" long, ochroleucous, with the broad rounded keel tipped 

 with purple and equahng the other petals; legume as in the preceding, 

 globose-ovate, |-1' in length. — Above Sonora Pass in the Sierra Nevadas, 

 (Brewer.) East Humboldt Mountains, Nevada ; 11,000 feet altitude ; July, 

 August. (256.) 



AsTEAGALUs CALYCosus, Torr. MSS. Perennial, with a short thick 

 much-branched caudex, nearly acaulescent, silvery-sericeous; leaflets 1-3 

 (rarely 5) pairs, oblong or ovate, 1-4" long, usually acute ; peduncles radical, 

 a little exceeding the leaves, 1-2' long, 2-6-flowered ; flowers J' long, 

 ochroleucous, with the very obtuse rounded keel purple-tipped and much 

 shorter than tiie vexillum and the 2-lobed wings ; the campanulate calyx- 

 tube exceeding the acuminate or triangular teeth ; legume sessile, minutely 



