324 COMPOSITAE 
23. Aster siskiyouénsis Nels. & Macbr. Siskiyou Rayless Aster. Fig. 5548. 
Aster brickellioides var. glabratus Greene, Pittonia 2: 17. 1889. 
Eucephalus glabratus Greene, op. cit. 3: 56. rigiveg 
Ast. ak SURE TOMENAE NE. & Machbr. Bot. Gaz. 56: 477. 1913. 
E Eastw. Proc. Calif. Ac ads EV. 2025157.. 1931. 
Aster glabratus Blake ex M. E. Peck, Man. Pl. Oregon 726. 1941. Not Kuntze, 1891. 
ms 3-6 dm. high, simple, reddish below, arising from a woody, creeping, branched rhizome, 
sistally ne brous or somewhat g a especially beneath the involucres. Lower leaves reduced 
and scale-like, the others nearly u m, somewhat smaller toward the inflorescence, 3-6 cm. 
long, ovate-lanceolate to oblong, natgols eee glabrous and so metimes roughish- -puberulent 
beneath, occasionally thinly pilosulose in intergrading forms; heads few to several in a leafy- 
bracted, corymbifo panicle, the pedicels slender and spreading, the involucre campanulate, 
4-5-seriate, and strongly graduate, 8-9 mm. high ; outermost a ries loose, lanceolate, and green, 
the inner broader, indurated, pale ie the tip greenish, the margin. scarious, ciliate a t least above, 
rarely tinged with purple, glabrou on the back Ne einetinied minutely 7 landular ; rays absent, 
rarely 1 or 2; achenes siiesintt uakiae: pappus tawny. 
Dry forested slopes, Arid Transition and lower Canadian Zones; Siskiyou Mountain n area, Josephine and 
Jackson Counties, Orezon, ss ta (sto Siskiyou County, California. Type locality: ‘“‘toward the summits of 
the Siskiyou Mounta Ore g.—Sept. 
e marked sree Ds ° “his species saeeeste. bee hybridization may oceur between A. siskiyouensis and the 
other species of the Eucephalu 
24. Aster vialis (Bradshaw) Blake. Wayside Aster. Fig. 5549. 
Eucephalus vialis Bradshaw, a 20: 122. 1921. 
Aster vialis Blake, Rhodora 30: 228. 1928. 
Sericocarpus sipei Henderson, Madrofio 2: 105. 1933. 
Stems about 1.2 m high, simple below the inflorescence, leafy, densely stipitate-glandular 
especially above and sparsely pilose. Lowest leaves minute, the others gradually reduced above, 
ipti i cm. long, 0.8-2.3 cm. wide, acute or subacu 
at este eee tire or the larger rarely with a few shar rp teeth, rather firm, green, 
pe obscurely "etindula above beneath dull, tipitate- “glandular, eh sparsely pilose, 1-nerved, co 
with a pai basal v - heads discoid, 1-1.2 cm. hi gh, several to numerous, cymose rot in a 
narrow, eine. leafy soir ie the peduncles short ; in estate carbine to peodbee <A ulat agi 56 state 
strongly graduate, 7-8 mm. high; the phyllaries linear or linear-lanceolate to (in the inner) linear 
the ou aes ee a 
a 
hart mu 
outermost essen ially herbaceous, pp rved, at most sometimes slightly urplish-ti ged; achenes 
compress one rel pappus aches he inmost triste slightly dilated Fanieatly. the 
outermost short, stalos 
= erage Bar po Willamette Valley, Lane County to Douglas County, Oregon. Type locality: Eugene, Lane 
ounty 
25. Aster ledophyllus A. Gray. Cascade Aster. Fig. 5550. 
r engelmanni var. ledophyllus A. Gray, hg Amer, Acad. 8: 388. 1872. 
pos ledophyllus A, Gray, op. cit. 16: 98. 
Bucepliaies tatophylies cachapsge ey _ = 1896. 
162. 1897. 
Aster covillet Blake ex M. E hed Man. es Oregon 725. 1941. 
Stems several from a stout woody caudex, normally simple below the inflorescence, 20-90 c 
high, tomentose or sometimes only big ad pilose, leafy. Lowest leaves scale-like, the others site 
uniform, lance-elliptic or oblong to oblong-lanceolate, 1. 35 .5 cm, long, 4-20 m ide, acute 
or obtuse, callous-apiculate, rounded at the s scale nonclasping base, entire, green and essentially 
gla ous above, griseous- or cinereous-tomentose beneath, I-nerved a ith a pair of weaker 
uate, to 
mostly bets cha narrowly scarious-margined, with short or (in the inner) obsolete, 
- _ sasually pu purple-tipped or -margined ; rays about 6-20, vache purple, or pink shading 
0 lav g; achenes 5-ribbed, thinly pilose; pappus graduate, the innermost 
belies eelaks gf fal acically. ted ak oa very aly setulos 
eadows and open woods, Canadian and Hudsonian Zones; Cascade Mountains of WaShington south t 
ern Oregon and in a usually glabrate set to adjacent northern California nl td south as te mountains 0: of 
cane and eo ae Co Counti Type locality: “high up the Cascade Mountains” [Mount Hood], Oregon. 
The ales y wih ye as Eucephalus cowiles Greene from Crater Lake, Oregon, has granular-glandulose pedun 
cles which completely lack the loose short-pilose scence. Some of the California specimens also exhibit this 
character, more evidence of its extreme variability in the Siskiyou region. The rays are usually few el gsm - 
the northern forms. In its northern range or ledophyllus beget aieaes with A. Engelmannii and spe oa are t 
be found that are difficult to assign precisely to either spec 
