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BRACHYACTIS COMPOSIT A 315 
- BRIGERON 
into winged petioles, often ciliate: heads numerous, hemispherical, 4 lines 
high: bracts of the involucre oblong, obtuse, herbaceous: rays a line long, 
pinkish-purple exceeding the involucre but shorter than the pappus; 
achenes narrow, appressed-pubescent. Muddy saline flats and margins of 
ponde, Washington to California, New Mexico and the Rocky mountains. 
21 ERIGERON L. Gen. n, 951. 
Herbs or rarely suffrutescent plants with entire, toothed or 
lobed leayes and solitary, corymbose or paniculate heads of vari- 
ous colored ray-flowers. Heads mostly hemispherical, many 
flowered: the ray flowers very numerous and usually in more 
than one series (sometimes wanting), pistillate those of the disk 
tubular, perfect, or some of the exterior filiform-tubular and trun-. 
cate, pistillate. Bracts of the involucre mostly equal, narrow, in 
asingle or somewhat double series. Receptacle flat, naked, 
punctate or scrobiculate. Appendages of the style very short 
and obtuse. Achenes compressed, usually pubescent, commonly 
with 2 lateral nerves. Pappus a single series of capillary scab- 
rous bristles, rather few in number, often with minute set# inter- 
mixedor forming an indistinct outer series, or sometimes with 
a distinct and short squamellate-subulate or setaceous exterior 
pappas, the inner rarely wanting in the ray. 
1 Evericeron DC. Gray Syn. Fl. Pt. 2, 207. Rays 
elongated and conspicuous, or in a few species uniformly want- 
ing,in one or two occasionally abortive: no rayless pistillate 
flowers between the proper ray and disk. 
* Perennials, commonly dwarf, from a multicipital caudex, alpine or 
alpestrine with comparatively large and mostly solitary heads: invol- 
ucre loose or spreading, and copiously lanate with long multiseptate 
hairs. 
E. uniflorus L. Fl. Lapp. t. 9, f.3. Stems 1-2 inches high or moe 
strictly monocephalous, few-leaved, often naked. and pedunculiform at 
summit: radical leaves spatulate or oblanceolate, 1-2 inches long: cauline 
lanceolate to linear: involucre usually hirsute as well as lanate occasion- 
ally becoming naked, the linear acute bracts rather close, or merely the 
short tips spreading: rays purple or sometimes white, 2-4 lines long. In 
Labrador to the Arctic coast and Unalaska, south to the Sierra Nevadas, 
California and the Rocky mountains. 
E. lanatus Hook. FI. ii, 17, t. 121. Stems 8-10 inches high from a mul- 
ticipital caudex, scapiform: or few-leaved, monocephalous: radical leaves 
spatulate to obovate, about half-inch long tapering into a narrowed base 
or into a slender margined petiole; some primary ones occasionally pal- 
mately 3-lobed; cauline one or two small and laner, or hardly any: involu- 
cre densely soft-lanate: the linear acute bracts rather close or merely the 
short tips spreading: rays 3 lines long, white. In the Cascade mountains 
of Washington to the northern Rocky mountains. 
-E. grandiflorus Hook. FI. ii, 18, t. 123. Stems 8-20 inches high, 
rather stout, usually several-leaved and monacephalous: radical leaves ob- 
ovate-spatulate‘ 1-3 inches long; cauline oblong to lanceolate, 4-6 lines 
long: involucre half-inch high, very woolly, its linear and attenuate-acumi- 
nate bracts squarroses-spreading or the tips recurved: rays violet or pur- 
ple, 4-6 lines long. Rocky mountains from British Columbia to Colorado. 
