“AGOSERIS COMPOSIT A 401 
glaucous: scapes slender, 1-3 inches high: linear-lanceolate, laciniate-pin- 
natifid into a few short and narrow lobes, or some entire: involucre narrow, 
over half-inch high, rather few-flowered; its 10 or 12 bracts nearly equal, lan- 
ceolately acuminate, glabrous: flowers yellow: achenes 3 lines long, about the 
length of the soft distinctly barbellulate pappus. Grassy slopes, high moun- 
tains of southern Oregon and northern California, 
A. tomentosa. More or less tomentose up to the involucre: scapes 
rather stout, 4-10 inches high: leaves lanceolate to linear in outline, irregu- 
larly and often retrorsely lobed or toothed, or some of the inner ones entire, 
acute, or acuminate, attenuate below to a short winged petiole, nearly as 
long as the scapes: involucre campanulate, 8-9 lines high, of rather numerous 
imbricated, lanceolate acuminate scarious-margined mostly glabrous bracts: 
achenes fusiform, short-beaked, much shorter than the brownish pappus. On 
grassy slopes, Stein Mountain southeastern Oregon. 
A. parviflora Greene |. c. Troximon parviflorum Nutt. Glabrous 
throughout: scapes slender, much longer than the leaves 5-15 inches high: 
leaves narrowly linear, acuminate, entire, 3-8 inches long: 1-3 lines wide: 
heads an inch broad or less: involucre oblong-ovoid, becoming nearly hemi- 
spheric in fruit, 6-8 lines high; its bracts lanceolate and acuminate: achenes 
conspicuously beaked, about 4 lines long: pappus of numerous unequal very 
slender bristles. Plains, Idaho to Manitoba, Nebraska and New Mexico, 
§ 2 Achenes with a slender and mostly filiform nerveless beak and 
soft pappus: acaulescent perennials. 
* Achenes acute or tapering at summit into a beak but little if at all 
longer than the cylindraceous or narrowly fusiform body. 
A. aurantiaca,Greene 1 c. Troximon aurantiacum Hook. Nearly 
glabrous, deep green and not at all glaucous: leaves oblanceolate, obtuse, 
entire, narrowed toa slender petiole: involucre 7-9 lines high: its bracts 
from broadly to narrowly lanceolate, acute, or the outer and looser ones ob- 
long and obtuse: flowers orange, drying brownish or purple achenes thickish, 
tapering gradually to a short stout beak. High mountain prairies, Oregon to 
Alaska and the Rocky Mountains. 
A. purpurea Greene l.c. Sparsely lanate when young, in age glab- 
rate, more or less glaucous: scapes 6-20 inches high, enlarged and tomentose 
at the summit: leaves from linear to lanceolate saliently or often runcinately 
toothed or lobed: bracts of the involucre moderately well imbricated, 4-12 
lines long, lanceolate and long-acuminate, or the outer ones oblong and ob- 
tuse: corollas deep saffron-color, drying purple: achenes black, fusiform, 
with a slender beak about as long as the body: pappus white. Mountain 
meadows, Oregon and Washington to the Rocky Mountains. 
A. gracilenta Greene l.c. Troaimon gracilens Gray Scapes slender, 
10-18 inches high: leaves mostly entire, from lanceolate to nearly linear, or 
some narrowly spatulate: involucral bracts narrow: corollas deep orange: 
achenes fusiforin-linear, 3-4 lines long; the very slender beak as long or 
longer: pappus soft but not flaccid, In the Cascade Mountains of Oregon 
and Washington to Wyoming. 
A. elata Greene l.c, Zroxrimon Nuttallii Gray. Robust; scapes 6-20 
inches high: leaves thickish, ftom lanceolate to spatulate, and frum spar- 
ingly dentate to pinnatifid, 6-12 inches long, glaucous: heads an inch or more 
high and broad: involucral bracts lanceolate, acute, more or less pubescent: 
corollas yellow: achene thickish, 3 lines long, with a beak as long or longer. 
Moist ground, eastern Oregon to California and Utah. 
