378 LEGUMINOSAE 



sub^labrous; loaves IVj to l^^ inches lonp:; leaflets 7 to 11, obovate to narrowly 

 oblonf2:-cuneate, obtuse to obcordate, 2 to 4 lines longr; heads closely (3 or) 5 to 

 9-floM-ered, the flowers 4 to 4Vi2 lines lon<r ; i-alyx black-hairy ; calyx-teeth lanceolate- 

 subulate. 1'2 to as lonjj: as tlie tube; corolla tinged violet-purple; pods ovate or ob- 

 long-ovate, silvery-pubescent, 2-celled, grooved on the back, 3 to 4 lines long, the 

 style developed into a stout straight beak about as long as the body; seeds 6. 



Grass}' moist meadows of openly wooded hills or valley floors, 300 to 1500 feet : 

 North Coast Ranges from Mendocino Co. to Marin Co. Apr.-May, fr. June. 



Tax. note. — Though differing so strongly in their pods. Astragalus breweri and A. rattanii 

 arc much alike in habit, in foliage and in inflorescence. The flowers are scarcely distinguishable. 

 The keel of A. breweri, usually sharply truncate, is about % the length of the wings, that of A. 

 rattanii, commonly with rounded apex, is almost as long as the wings. Both species are limited 

 to the North Coast Eanges, but their ranges appear to be mutually exclusive. 



Locs.— Willits, Davy ^- Blasdale 5073 ; Scotts Valley, Lake Co., Tracy 1647; Sonoma, Brewer 

 979; St. Helena, Clara Hunt; Mt. Tamalpais, Newlon 88. 



Kefs. — Astragalus bkeweri Grav, Proc. Am. Acad. 6:207 (1864), type loc. Sonoma Valley, 

 Brewer; Jepson, Fl. W. Mid. Cal. 291 "(1901), ed. 2, 235 (1911), Man. 577, fig. 568 (1925). Tra- 

 gacaniha Ireweri Ktze. Eev. Gen. PI. 2:943 (1891). 



67. A. tener Gray. Alkali Loco. Stems slender, branched from base, 3 to 

 12 inches high, minutely appressed-pubescent ; leaves 1 to 1% inches long ; leaflets 

 9 to 15, linear or cuneate-oblong or -obovate, acute or emarginate, 3 to 5 or 8 lines 

 long, the lower sometimes obcordate, 2 lines long; flowers purplish, 5 lines long, 

 in heads or short racemes, the slender peduncles longer than the leaves; calyx-teeth 

 subulate, more than half as long as the narrow-campanulate tube; pods linear, 

 subcylindric, 5 to 7 lines long, lightly appressed-pubescent, strongly grooved on 

 the back by the inturning of the dorsal suture, completely 2-celled; style persistent 

 in fruit, short, hooked; seeds 6 to 10. 



Alkaline flats or plains, 5 to 800 feet : Sacramento Valley; South Coast Ranges 

 from Alameda Co. to Monterey Co. Apr.-May. 



Field note. — On subalkaline flats Astragalus tener is most commonly found in little colonies. 

 "When small-sized it is in habit rather clover like. The keel is commonly half as long as the banner, 

 the -nings three-fourths as long. The leaflets assume two markedly different shapes, narrowly 

 linear and acute, and shortly and narrowly obcordate, but there are intergrade forms. Narrowly 

 linear leaflets, either acute or emarginate, may be found in the same collection from one colony 

 a few feet across w-here the individuals are evidently of common parentage (Vacaville, Jepson 

 13,755) ; likewise, narrowly linear acute leaflets and obcordate leaflets may be found in one col- 

 lection (Vacaville, Jepson 13,758) ; sometimes, again, such leaf forms may be found on one in- 

 dividual (Suisun, Jepson 9619). The flowers are usually a little reflexed after anthesis, the 

 straight fruiting peduncles spreading or somewhat deflexed. 



Locs. — Buckeye, Shasta Co., Blanhinsliip ; Yuba City (w. of),' Sutter Co., Jepson 13,759; 

 College City, Colusa Co., Anna Jeifreys; Vacaville, Jepson 13,755 ; Suisun, Jepson 9619 ; Oakland, 

 Blasdale; Alameda, Tidestrom; Newark, Davy 1112; Livermore, Michener ^ Bioletti; Soledad, 

 Monterey Co., Jones 3155. 



Var. bruceae Jones. Pods purple-mottled, flattish. — -Volcanic fields between Chico and Oro- 

 ville. Heller 11,286 (Chico-Oroville) is an excellent match for the type spm. (Baker Herb.). 



Kefs. — Astragalus texer Grav, Proc. Am. Acad. 6:206 (1864), type from Cal., Douglas; 

 Jepson, Fl. W. Mid. Cal. 291 (1901), ed. 2, 235 (1911), Man. 578, fig. 569 (1925). A. hypo- 

 glottis var. strigosus Kell. Proc. Cal. Acad. 2:115, fig. 37 (1861), type loc. vie. of San Francisco. 

 A. strigosus Sheld. Minn. Bot. Stud. 1:24 (1894). Hamosa Icelloggiana Kydb. Bull. Torr. Club 

 54:323 (1927). A. paupercidus Greene, Pitt. 3:224 (1897), type loc. "upper Sacramento", 

 Greene. A. iiti Eastw. Bull. Torr. Club 32 :195 (1905), type loc. Seventeen Mile Drive, Monterey, 

 Clemens. Phaca astragaUna var. li IT. & A. Bot. Beech. 334 (1838), type from Cal., Douglas. 

 Tragacantha tenera Ktze. Rev. Gen. PI. 2:948 (1891). Hamosa tenera Kydb. Bull. Torr. Club 

 54:322 (1927). A. tener var. rattanoides Jones, Kev. N. Am. Astrag. 268 (1923), type loc. Mt. 

 Eden, Brandegee. Hamosa rattanoides Kydb. Bull. Torr. Club 54:324 (1927). Var. bruceae 

 Jones, Rev. N. Am. Astrag. 268 (1923), type loc. Butte Co., Mrs. Bruce 2430. Hamosa bruceae 

 Rydb. Bull. Torr. Club 54:323 (1927). 



68. A. rattanii Gray. Humboldt Loco. Stems several to many from base, 4 

 to 14 inches high; herbage sparsely strigose-pubescent, the upper surface of the 



