138 COMPOSITtE. Aster. 



Rocky Mountains (lat. 54°-56° ?), Drummond ! — A plant with large 

 heads, mostly solitary on the erect and simple often leafless branches ; and 

 ample scattered leaves ; the radical ones, including the elongated petioles, 

 sometimes nearly a foot in length. Achenia slightly pubescent. Dr. Lindley 

 compares it with A. brumalis. 



69. A'. Douglasii (Lindl.) : stem glabrous, racemose-compound ; the (few- 

 leaved) branches loosely paniculate-cor^^mbose, bearing few (rather large) 

 heads; leaves linear-lanceolate, acute, mostly somewhat narrowed at the 

 base, glabrous, nearly all serrate ; scales of the hemispherical involucre 

 broadly linear (or the exterior spatulate-linear), acute, loosely imbricated 

 somewhat in 3 series, rather unequal, with spreading herbaceous summits; 

 rays rather large. — Lindl. ! in Hook. jl. Bor.-Am. 2. 'p- H? <-V ^^ -^C". prodr. 

 5. p. 239 ; Nutt. ! in trans. Amer. phii. soc. {n. ser.) 7. p. 293. 



Oregon, in low soils; common along the large rivers near the coast, Doug- 

 las! Dr. Scouler .'^'Nuttall .' . Aug.-Sept. — Varies; with shorter branches 

 and more numerous smaller heads; and with more slender and naked 

 branches, bearing fewer and larger headLS''{Lindl.) ; and specimens collected 

 by Mr. Nuttall have shorter and broader leaves, with rather strongly ciliolate- 

 scabrous margins. Dr. Lindley considers it allied to A. eminens, which it 

 resembles in foliage; and Mr. Nuttall compares it with A. Novi-Belgii, 

 which it nearly approaches in the involucre and flowers. — TBt^^ppus turns 

 brownish. 



60. A. laxifolius (Nees): stem scabrous, racemose-compound, narrow; 

 the branches racemose at the summit or slightly compound ; leaves narrowly 

 lanceolate (or lanceolate-linear), mucronately serrulate, attenuate to each 

 end, clasping, flaccid, scabrous above ; scales of the involucre linear, squar- 

 rose ; those of the terminal heads nearly equal. Nees, Ast. p. 69. A. longi- 

 folius, Nees, synops. p. 26, and of the Leyden Garden ; not of Lam. 



/?. ? borealis : stem strict, smooth and glabrous, or pubescent towards the 

 summit; leaves narrowly linear-lanceolate, elongated, with very scabrous 

 sparingly serrulate or often entire margins; the upper surface slightly sca- 

 brous ; heads solitary or few and n^ostly somewhat corymbose on the strict 

 (often very short) branches ; involucre about the length of the disk ; the 

 scales in 2-3 series, somewhat equal, lax, the summits more or less spreading 

 or squarrose when old. — A. laxifolius (a. &c (3.), Lindl..' in Hook. Jl. Bor.- 

 Am. 2. p. 10, Sf in DC. prodr. 5. p. 236, (excl. }'. carneus.) A. salicifolius, 

 Richards. ! appx. Frankl. journ. ed. 1. p. 748, not of Ait. 7 — Varies; with 

 the leaves serrulate and entire ; the stem with single or few heads, corym- 

 bose or racemose-compound; the pappus turns brownish. Lindl. in DC. — 

 Varies also (if we mistake not,) with the upper leaves rather shorter ; the 

 heads somewhat crowded on the branches ; the scales of the involucre (ex- 

 cept in the primary heads) more unequal and appressed ; verging towards 

 A. carneus. (A. strictus (3. angustifolius, Lindl. ! in Hook. I. c. Saskatcha- 

 wan, Drummond! not Arctic America.) A state with rigid leaves, the upper 

 ones longer than the simjjly racemose heads, is A. sestivus, Lindl. ! in 

 herb. Torr. 



y. ? l(Etiflorus : stem slender, mostly scabrous, racemosely branclied ; the 

 long and almost filiform branches spreading ; leaves linear or narrowly lan- 

 ceolate-linear, elongated, acute, rather rigid, scabrous above ; the margins 

 remotely serrulate or often entire, very scabrous ; heads loosely racemose 

 or somewhat paniculate at the extremity of the branches, on slender pedun- 

 cles or nearly naked branchlets; scales of the involucre unequal, with some- 

 what spreading tips. 



North America (cultivated in the Lej'den Garden), Nees. (i. Canada 

 {Mrs. PercivaU), Lake Huron {Dr. Pitcher!), and Saskatchawan ! to Arctic 

 America ! and west to the Rocky Mountains ! and the interior of Oregon ! 



