RYDBERG: STUDIES ON THE Rocky Mountain FLora 307 
turbinate tube, which is about 2 mm, long, slightly tomentose; 
its lobes oblong, 1.5-2 mm. long, obtuse; perianth yellow, glabrous, 
3-4 mm. long, with a stipelike base; divisions elliptic, obtuse, the 
outer slightly longer than the inner; filaments ciliate; ovary more 
or less hairy above, 3-angled. 
This species is related to E. umbellatum Torr., E. neglectum 
Greene (E. umbelliferum Small); and E. croceum Small. It has the 
Compound inflorescence of the last one, but the leaves are green 
and glabrate in age and much narrower than in the other species 
mentioned, : 
Uta: Fish Lake around Twin Creeks, August 8, 1905, Ryd- 
berg & Carlton 7376, 7460, and 7483; Fish Creek Canyon, August 2, 
1909, A. O. Garrett 2568, 
Eriogonum idahoense sp. nov. 
Shrub 4-6 dm. high with gray bark; branches more or less 
tomentose, erect; leaves 2-3 cm. long, short-petioled; blades ob- 
lanceolate, white-tomentose beneath, loosely floccose and soon 
glabrate above: floral branches about 1 dm. high; inflorescence a 
compound trichotomous flat-topped cyme; involucres in the axils 
Peduncled; peduncles of the lower forks 1 cm. long; branches of 
the cymes short, not over 5 cm. long; involucres turbinate, about 
3mm. long, floccose; lobes about 1 mm. long, lanceolate-oblong, 
obtuse; perianth yellow, glabrous, about 2 mm. long, without stipe- 
like base; fruit unknown. “i 
_ The type was labeled Eriogonum microthecum Nutt., which 
t resembles in habit, but the flowers are yellow instead of pink or 
White, and the lobes of the involucres are longer and not scarious- 
margined. It is more closely related to E. orendense A. Nels. and 
E. “ampanulatum Nutt. From the first it is distinguished by the 
leaves, which are glabrate above, the tall stem, and the more open. 
Inflorescence: from E. campanulatum by the tall shrubby habit and 
the tomentose involucre. 
IDano; Wieser, uly 7, 1899, M. E. Jones 6511 (type, in herb. 
N.Y. Bot, Garden), 
“Eriogonum spathuliforme sp. nov. 
Perennial, shrubby at the base, leaves all near the base; petioles 
% cm. long; blades elliptic to spatulate, 1-3.5 cm. long, white- 
Mentose on both sides, densely so beneath; stem scapiform, 
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