308 BOTANY, 



Humboldt Mountains, Nevada. Collected in Star Canon of the same range ; 

 5,000 feet altitude ; September. (1,035.) 



Eriogonum ceenuum, Nutt. T. 8f G., I. c, p. 182. Annual, slender, 

 4-12' high ; leaves radical or sometimes cauline, round or obovate, somewhat 

 long-petioled, floccose-woolly ; panicle glabrous, vs^idely spreading, decom- 

 pound, usually very many-flovi^ered ; pedicels soon deflexed, smooth, 2-3 

 times longer than the campanulate glabrous many-flov^ered involucre ; bract- 

 lets setaceous, short, subnaked; calyx white or pinkish, glabrous, 6-cleft, 

 turbinate and acute at base, the outer segments square, emarginate or retuse, 

 scarcely exceeding the oblong half-as-wide inner ones. — Involucres not over 

 1" long ; flowers scarcely as long and often much shorter, and well-marked 

 by the top-shaped base. Western Texas to Arizona and north to Wyoming 

 and Idaho. Var. tenue, T. & Gr. Panicle more slender, and with less nu- 

 merous flowers ; pedicels capillary, elongated, 3-12" long ; involucre smaller 

 or more slender, few-flowered. — Raby Valley and Humboldt Pass, Nevada, 

 on the foot-hills of the Wahsatch and in Bear River Valley, near Evanston, 

 Utah; 5-6,000 feet altitude ; July-September. (1,036.) 



Eriogonum pusillum, T. & Gr. ; I. c, p. 184. Annual, often small, 2-10' 

 high; leaves radical, 2-12" in diameter, round and obovate, usually narrowed 

 into a petiole i-W long, the larger often subcordate at base, white-woolly 

 beneath, floceose above ; bracts rather small, in fours at the nodes and base 

 of the loose somewhat simple or efl^usely branched panicle, glandular and 

 woolly within ; pedicels very slender and elongated, in the forks i-V long, 

 not deflexed; involucre nearly hemispherical, coarsely 5-6-toothed, 10-15- 

 flowered, minutely glandular, less than 1" long ; bractlets obovate and spatu- 

 late, loosely webby- woolly below ; calyx yellow, sometimes tinged with purple, 

 becoming nearly 1" long, shghtly glandular-pub erulent, very obtuse at base, 

 deeply 5-parted, the segments nearly similar, the outer oval-obovate, a little 

 larger than the oblong inner ones.— Foot-hills of the Trinity Mountains, Ne- 

 vada ; 5,000 feet altitude ; May. (1,037.) 



The original description, here slightly modified, was founded on a dwarf 

 precocious form. Better developed specimens (ticketed by Dr. Gray U. 

 reniforme) have larger subcordate leaves and a more branched panicle. The 

 very nearly allied E. reniforme, Torn, collected by Fremont on the Sacra- 

 mento, and by Cooper and Palmer in Western Arizona, first described in 

 Frdmont's report, has the leaves densely and very softly woolly on both sides 



