OF ARTS AND SCIENCES. 345 



cate, 2-4 inches high, spreading or decumbent at base ; leaves not 

 ftiscicled, pungent; liowers on elongated .pedicels, truncate at base, 

 pentamerous; petals nearly equalling the sepals; stamens 10. — This 

 is the western equivalent of S. decumbens of the Eastern States 

 (S. siibulata of authors, but apparently not of Wimmer), found in the 

 valleys and borders of salt marshes from Oregon to San Francisco. 

 It has been collected by Bolauder (n. 3891), Brewer (n. 2522), and 

 by Bigelow and Greene in California ; it is in Hall's Oregon collection 

 (n. 58) as S. Linncei, and was also found by Lyall. It differs espe- 

 cially from decumbens in its laxer and slenderer habit, more elongated 

 pedicels, and in the somewhat less conical base of the calyx. 



Claytonia triphylla. Root tuberous, small ; stem slender, 2-3 

 inches high, bearing a whorl of three or rarely but a pair of narrowly 

 linear leaves, 1—2 inches long ; flowers small, in a sessile or peduncu- 

 late spreading panicle; bracts minute; petals oblong, 2 lines long, a 

 half longer than the rounded sepals. — First collected by myself in 

 July, 1867, above Cisco, California, and since by Dr. Kellogg in the 

 same locality, as well as by Dr. Asa Gray in Yosemite Valley, and by 

 J. G. Lemmon in Sierra County. Probably not rare in the high 

 •Sierra Nevada. 



LuPiNUS (Platycarpos) Sileri. Erect and slender, branching 

 above, loosely and softly villous, 4-8 inches high ; leaflets 5, oblan- 

 ceolate, acutish, smooth above, 5-12 lines long, shorter than the 

 petioles ; racemes short and dense, long-peduncled, the pedicels very 

 short, not verticillate ; bractlets linear; calyx -lobes herbaceous, 3 lines 

 long, toothed, the upper slightly shorter; petals light i^urple, narrow, 

 equal, little exceediisg the calyx. — Southern Utah and on the Rio 

 Grande in Southern Colorado; A. L. Siler, Wolf (n. 195) and Parry 

 (n. 43). Readily distinguished fronti L. pusillus by its slender habit, 

 softer pubescence, and capitate long-peduncled racemes. 



Astragalus Thompson^e. AWmdi to A. mcdacus ; shortly caules- 

 cent, densely villous-tomentose throughout ; leaves elongated, with ten 

 to fifteen pairs of leaflets, which are oblong to obovate, obtuse or 

 emarginate, 2-4 lines long; racemes long-peduncled, about equallmg 

 the leaves, rather densely flowered ; calyx cylindrical, with short 

 triangular and acuminate teeth ; flowers purple, 6 lines long, the keel 

 equalling the banner, obtuse and scarcely beaked ; pod densely 

 silky, coriaceous, 2-celled, ovate, arcuate, acuminate, G-8 lines long, 

 somewhat sulcate on both sides. — With much of the habit of members 

 of the Eriocarpus section, but distinguished by the 2-celIed legume. 



