328 COMPOSITAE 
32. Aster scopulérum a Gray. Lava Aster. Fig. 5557. 
Chrysopsis alpina Nutt. et Acad. Phila. 7: 34. pl. 3, fig. 2. 1834. Not A. alpinus L. 1753. 
Diplopappus alpinus Nutt. Trans. Amer. Phil. Soc. <3 7: 304. 1840. 
Aster scopulorum A. Gray, ae Amer. Acad. 16: 98, 18 
Tonactts alpina Greene, Pittonia 3:.245. 
Stems numerous, tufted, from a compactly branched, woody caudex, erect or ascending, simple, 
monocephalou 5 ibeliaue m. high, baer sae leafy, from sparsely and loosely pilose to subtomentose. 
Lowest leaves smaller r, — atulate, the others elliptic to oblong or linear, ng, mm. 
wide, callous-cuspidulate, aie entire, rigid, l-nerved, pale green, densly hispidulous scaheass, 
with narrow whitish margin; pedunc es 1-4 ong; heads 1.5-2 .5 cm. “wide re 
panulate-hemispheric, 7-10 mm. high, about 4-5 eriate, strongly g raduate, the fete ies erect, 
lanceolate to linear, acuminate or acne: are les 1- ribbed, ictalious a nd pilose, with greeni sh 
center and narrow subscarious margin; rays abou aoe or purple, 7-12 mm. long ; achenes 
silky-pilose ; outer pappus setulose, about 1 mm. ri 
Dry mountainous regio often in sagebrush, Arid ae and nadian Zones; eastern Oregon east to 
Wyoming and Montana an orig south to the Wark ner and White Moutains, Calffornia, and Fesconishe to central Ne- 
vada. Type locality: dry prairies, not far from the Flathead River, Montana. May-Jul 
33. Aster alpigenus (Torr. & Gray) A. Gray. Alpine Aster. Fig. 5558. 
Aplopappus ? alpigenus Torr. & Gra aN: 
sideige bee, ape Gray, Proc. Amer. Acad. 8: 389, 1872 
Greene, Pittonia 3: 147. 
O t ae r Greene, op. cit. 4: 224. 1900. 
s decumbent at bese, several from a ots sometimes few-branched “a arising from 
a in, i 
d wit , gla s 
rather one tek 3~5- tte Sarina aves few, ag below oe middle, linear ie! peat r-spatulate, 
0.6-4.5 ¢ the upper ciliate; head 2.2-3.5 cm. wide; cre A, rsh eric, ee 
subequal or of slighty graduate, 8-10 mm. high, the piyllaries ie or oblong, acute obtusish, 
tomen tulose, l-nerved, often peeps sass r rather loose, the outer icthertnncetts ‘throughout 
oth short ete base, the inner subscarious-marg nea he Saraiva often purple a rays 
abou t 20-28, Sere. Kae or pape, Sacecty suit ripe sa was the base on outer side, 6-10 mm. 
achene mpressed, about 5-nerved, pilose toward apex, glabrous below ; 
ke ape tie “battles | stenely hispidu lous 
Mountain ridges and meadows, Boreal Zone; the Cascade Mountains of Washington and bbe and the 
cnet mountains in northeastern Oregon. Type loc ality: Mou =p Rainier, Washington. June—Sep 
alpige’ ones subsp. haydénii (Porter) Cronquist, Leaflets West. Bot. 5: 77. 1948. vor haydeni 
Peg penile ep. "Matkaa 1871: 485. 1872; - ‘gudehets D. C. Eaton, Bot. King Expl. 143. 1871, 
not A. pulchellus Wittd.; ee haydeni whee Me . Bot. Gard. 1: 398. 1900; oe. haydent 
ey en 
the name-bearing subspecies; rays 10-30; achene ¢. Baise at ave ex or Pe ae Western Wyoming and 
Montana west to the Blue, the Wallowa, and Ste n Mountains, Oregon, south to Elko County, Nevada. Type 
Aster alpigenus subsp. andersénii (A. Gray) Bae Bibl. Bot. 261%: 15. pire (Erigeron andersonti 
A. Gray, Proc. Amer. Acad. 6: 540. 1865; Aster andersonii A. Gray, op. cit. 7: 352. At eee pote anderson 
s s igen: oO : 
glabrous, the inner phyllaries usually acuminate or Seager ang rays purple, sparsely sc le without 
tow ugho' 
ard the h y sear margins usually purple above; achenes pilose thro ut oe i 
meadows and bogs, Boreal Zone; in the Siskiyou Mountains, Josephine st Rares: Counties, Oregon, south t 
H Idt C _ , California, and through the Sierra N “f lare C . California, and adjacent Nevada: 
also on Mount San Jacinto, southern Ealttornia. Type locality: near Cars sunt City, Nevada. June—Sept. 
Seictmate ps to be found within the range of id material in the Siskiyou region in California and also 
in Butte County that have achenes pilose only at the 
34. Aster elatus (Greene) Cronquist. Plumas Alpine Aster. Fig. 5559. 
Oreastrum elatum Greene, Pittonia 3: 147. 1896. Not A. elatus Bert. ex Steudel. (Hyponym) 
Aster clatus Cronquist, Leaflets West. Bot. 5: 80. 1948 
ong "Et? rt 
stem-leaves few and muc uced ; flow er-heads so olit tary on ieee: Seas: simeaeré imbricate, low- 
r a u 
ae ex 
wee Bee apically a nd pale- charities below ; ray-flowers about 25, violet or lavender, 7-12 mm. 
lon chenes several-nerved, glabrous or tet Re Baity at the apex; pappus whitish, of about 
401 bist = 
ws, Canadian Zone; Plumas County and probably Lassen County, California. Type locality: Mount 
Dyer, oe ‘Lassen eee Line. July—Aug. 
35. Aster peirsénii C. W. Sharsmith. Peirson’s Aster. Fig. 5560. 
Aster peirsonii C. W. Sharsmith, Leaflets West. Bot. 5: 50. 1947. 
Plants cespitose from a stout, branching, erect root, the stems 1 to several, arising from the 
woody caudex covered with peaitent bases of dead leaves. Leaves many, mostly basal, firm, 
