PEA FAMILY 369 



long, petiolulate; petioles i/^ to 9 lines long; peduncles stout, I14 to 2^/2 inches long; 

 flowers 6 lines long; calyx-teeth narrowly lanceolate, % as long as tube; corolla 

 dull purplish and greenish white; pods oblong in outline, strongly obcompressed, 

 broadly and shallowly grooved dorsally, markedly curved, glabrous, 10 to 11 lines 

 long, incompletely 2-celled by intrusion of the dorsal suture; stipe 3 to 4 lines long, 



Sandy mesas, 4000 to 4500 feet : region of the Providence Mts., Mohave Desert. 

 Fr. June. 



Tax. note. — This excellent species, first recognized by Jones, has been collected only twice: 

 Barnwell, Ferris 4" Bacigalupi ; Cima. It is placed near Astragal«3 bolanderi Gray by Jones 

 (Rev. N. Am. Astrag. 163), to which it is not at all related. Its pods are those of Astragalus 

 leucolobus Jones in shape, curvation, and obcompression. The dorsal suture is similarly intruded, 

 though not so completely. 



Eefs. — Astragalus cimae Jones, Rev. N. Am. Astrag. 163 (1923), type loc. Cima (e. Mohave 

 Desert), K. Brandegee. Phacomene cimae Rydb. N. Am. Fl. 24:384 (1929). 



44. A. layneae Greene. Widow's Loco. Stems commonly very short, dif- 

 fusely spreading, 14 to II/2 feet high, the leaves mostly basal or sub-basal; herbage 

 densely appressed-villous or often loosely villous, gray or at length subglabrate 

 and greenish; leaves 3 to 6 inches long; leaflets 13 to 23, roundish-obovate, obtuse, 

 3 to 9 lines long; racemes loose, 2 to 8 inches long, many-flowered, the peduncles 

 longer or shorter than the leaves; flowers 6 to 10 lines long; calyx black-hairy; 

 calyx-teeth triangular, i/4 to % as long as the tube; corolla white, purple-tipped; 

 free filament very short; pods linear, acute or acuminate, obcompressed, strongly 

 incurved, hairy-pubescent or glabrate, often purplish-mottled, 1 to 2 (or 2^/2) 

 inches long, 2% to 5 lines wide, incompletely 2-celled, the inturning of the dorsal 

 suture forming a broadly V-shaped groove; seeds 10 to 20. 



Sandy washes in the desert, 2200 to 5100 feet : Mohave Desert; Inyo Co. East 

 to Arizona and Nevada. Apr.-May, fr. May-June. 



Locs. — Stoddard Well, Jepson 5903 ; Kramer, Jepson 5335 ; Calico Wash, n. of Daggett, 

 Jepson 6698; Inyo, T. Brandegee; Searles sta., Inyo Co., Wheeler ^ Richardson; Maturango 

 Peak, Argus Mts., R. S. Ferris 7843 ; Harrisburg Flat, Panamint Range, Parish 9998 ; Echo Canon, 

 Fimeral Mts., Coville 4r Gilman 128; Darwin, Inyo Co., Jones. 



Refs. — Astragalus layneae Greene, Bull. Cal. Acad. 1 :156 (1885), type loc. Mohave Desert, 

 Parish Bros. 1273; Jepson, Man. 573, fig. 565 (1925). A. malacus var. layneae Jones, Zoe 4:29 

 (1893). Eamosa layneae Rydb. Bull. Torr. Club 54:15 (1927). A. fremontii var. Gray; Torr. 

 Pac. R. Rep. 4:80 (1857). 



45. A. nevinii Gray. Dune Loco. Stems ascending, 8 to 18 inches long; herb- 

 age silvery-pubescent; leaves 1^/2 to 3 inches long; leaflets barely discrete, cuneate- 

 obovate, notched at apex or obtuse, 2 to 8 lines long; racemes several-flowered, 

 subcapitate, % to 1^/2 inches long; flowers 5 to 5^/2 lines long; calyx-teeth lance- 

 olate, a little over half the length of the tube ; corolla white ; pod 2-celled, rather 

 narrowly oblong, curved, somewhat obcompressed, strongly grooved dorsally, 

 reticulate, puberulent to tomentulose, glabrate, stipitate, 8 lines long, 2 to 2^ 

 lines wide. 



Sand dunes, 50 to 200 feet : Santa Barbara Isls. Aug. (fl. and fr.) . 



Locs. — San Clemente Isl., T. Brandegee; Santa Catalina Isl. (Dav. & Mox. Fl. S. Cal. 195) ; 

 Santa Barbara Isl., Trash; Anacapa Isl., Hemphill. 



Refs. — Astragalus nevinii Gray, Proc. Am. Acad. 21:412 (1886), type loc. San Clemente 

 Isl., Nevin 4- Lyon; Jepson, Man. 575 (1925). Hum nevinii Rydb. N. Am. Fl. 24:390 (1929). 

 A. trasTciae Eastw. Proc. Cal. Acad. ser. 3, 1:102, fig. 6 a-d (1898), type loc. San Nicolas Isl., 

 IrasTc. Hum trasTciae Rydb. N. Am. Fl. 24:390 (1929). 



46. A. inyoensis Sheld. Inyo Loco. Stems slender, prostrate or widely 

 spreading, several from a branched root-crown, 8 to 18 inches long; stems subgla- 

 brous; leaves grayish-strigulose, the upper surface of leaflets glabrous; leaves re- 

 mote or somewhat scattered, % to 1^/2 inches long; stipules reflexed; petioles 1 to 4 

 lines long; leaflets 17 to 21, approximate, oval to broadly oblong or obovate, 2 to 



