480 RYDBERG: STUDIES ON THE Rocky MouNTAIN FLORA 
Professor Nelson both in the original diagnosis* and in Coulter 
& Nelson’s New Manualt described Lappula erecta as having the 
marginal prickles in a single row, but a duplicate of the type in 
the Columbia University herbarium and all specimens distributed 
as Lappula erecta by Professor Nelson himself in the herbarium of 
the New York Botanical Garden have a double row of marginal 
prickles, the prickles of the outer row being somewhat smaller 
than those of the inner. 
Oreocarya pustulosa Rydb. sp. nov. 
Perennial, branched at the base; stems 3-5 dm. high, glabrous 
or nearly so throughout, lower leaves linear-oblanceolate, the 
upper linear or linear-lanceolate, 3-10 cm. long, green, glabrous 
beneath, sparingly hairy above; the hairs short and at least in age 
with conspicuous pustulate bases; flowers paniculate; branches 
racemose, not secund; pedicels 1-2 mm. long; sepals triangular- 
lanceolate, acute; corolla white; tube not exceeding the calyx; 
limb 5-6 mm. broad; lobes orbicular; fruit depressed-globose; 
nutlets smooth, nearly white, mottled with light brown, more or 
less separated from each other on the margins, often not all 
maturing. 
This is related to Oreocarya multicaulis (Torr.) Greene, O. 
suffruticosa (Torr.) Greene and the Mexican O. Palmeri Greene. 
It differs from the first two in the glabrous stem, green leaves, and 
light nutlets, and from O. Palmeri in broader leaves and different 
habit. It grows in canyons at an altitude of 1,700-2,000 m. 
Uta: Hammond Canyon, Elk Mountains, July 31, 1911, 
Rydberg & Garrett 9320 (type, in herb. N. Y. Bot. Gard.); also 
same locality, Aug. 9, 1911, 9569; Dry Wash, southwest of Abajo 
Mountains, August 10, 9590. 
» § mm. long, 4 mm. wide; 
nutlets ovate, obtuse, 2 mm. long, acutely margined, rounded 
on the back and coarsely muricate, 
SASKATCHEWAN: Moose Mountain Creek, July 6, 1880, John 
: * Bull. Torrey Club 27: 268. 1r 
2. 1909. 
goo. 
T 41 
