800 
BOTANY. 
tending the umbel ; passing into Var. angustifolium, T. & G., with sub- 
linear leaves and a simple or compound umbel. East Humboldt Mountains, 
Nevada; 7-10,000 feet altitude; July, August. (1,011) 
Eriogonum umbellatum, Torr. T. ^ G., 1. c, p. 160. A span to a foot 
high, woolly, tomentose or vt-^ebby ; sterile branches decumbent or creeping, 
often stolon-like, loosely cssspitose, fasciculate-leafy at top ; leaves obovate- 
spatulate and oval, narrowing to a petiole, white-woolly beneath ; peduncles 
scapelike, leafless excepting the involucre of bract-like leaves subtending the 
simple or rarely subcompound umbel ; involucre deeply 6-8-clefl, many- 
flowered ; calyx very glabrous, yellow or sometimes white, the segments 2-3- 
times longer than the slender stipe ; filaments and ovary as in the last ; 
cotyledons nearly orbicular, a little shorter than the scarcely incurved 
radicle. — Nebraska to Northern Texas and west to Oregon and California. 
Frequent in the mountains throughout Nevada and Utah; 6-10,000 feet 
altitude ; June-September. (1,012.) A form is not rare with green and 
glabrate or almost glabrous leaves and peduncles. East and West Humboldt 
Mountains, Nevada; 7-9,000 feet altitude. (1,013.) 
Var. MONOCEPHALUM, T. & G. Dwarf, depressed, csespitose ; leaves 
glabrate above or on both sides, the blade l-l' long ; scape high, slender, 
bearing 2-4 capitate involucres with usually 1-3 bracts, or a single larger 
one, usually naked ; flowers smaller. — Oregon and California. On peaks of 
the East Humboldt and Clover Mountains, Nevada, and in the Uintas ; 
9-11,000 feet altitude; August, September. (1,014.) 
Eeiogonum (Pseudo-umbellata) Lobbii, T. & G.; /. c, p. 162. Peren- 
nial, low, casspitose, hoary at first with a very soft webby tomentum ; leaves 
crowded upon the thick caudex, subrounded, 1-2' long, contracted abruptly 
into a usually longer petiole, rather thick, sometimes glabrate above ; scape 
a span high, with rarely a single leaf below ; umbel subcompound, dense, 
stipitate, the verticillate leafy bracts obovate or lanceolate ; involucres cam- 
panulate, ^' long, 5-7-cleft ; flower with a very short abruptly contracted base; 
calyx 3" long, very glabrous, 6-parted, white or dull-yellow, the segments 
ovate, nearly equal ; filaments villous below ; ovary very glabrous ; radicle 
subinflexed, a little exceeding the rounded-obovate eccentric cotyledons. 
In the Sierras ; 8-11,000 feet altitude; near Virginia City, Nevada, (Stretch;) 
6,500 feet altitude. 
Eriogonum (Lachnogyna) acaule, Nutt. T. S)- G., L c, p. 163. 
