220 COMPOSITE. Erigeron. 



Fl. 561. E. alpinus & E. glahratus, in part, Hook. 'Fl. 1. c. Trimorphcea vulgaris, Cass. Diet, 

 liv. 324. — Anticosti to Labrador, >Sa.>>katchewan, &c., to Brit. Columbia and Oregon, and in 

 the Tiocky Jlountains south to Colorado and Utah. (Eu., N. Asia.) 



. Var. Drcsbachensis, Blvtt, 1. c. Somewhat glabrous, or even quite so : involucre 



also green, naked, at most hirsute only at the base, often minutely viscidulous : slender 

 rays somewhat slightly exserted, sometimes minute and filiform and shorter than the pappus. 

 — E. Drabachensis, 0. Mueller, Fl. Dan. t. 874 ; Fries, .Surama Scand. 182; Reichenb. Ic. FI. 

 Germ. xvi. t. 916. E. dongatus, Ledeb. Fl. Alt. iv. 91, & Fl. Ross. ii. 487. E. Kamtschati- 

 cus, DC. Prodr. v. 290. E. glahmtus, Hook. Fl. ii. 18, mainly, not Hoppe. — New Bruns- 

 wick and the north shore of Lake Superior to the Arctic Circle and Kotzebue Sound, south 

 along the Rocky Jlountains to Colorado and Utah, at about 10,000 feet. Clearly passes into 

 the other form. (Eu., X. Asia.) 



Var. debilis. Sparsely pilose : stems a span to a foot high from an apparently per- 

 ennial root, slender, 1-3-cephalous : leaves bright green ; radical obovate or oblong ; cauline 

 spatulate to lanceolate, short : involucre sparsely hirsute or upper part glabrate, the attenu- 

 ate tips of the bract^ spreading : rays in flower rather conspicuoilsly surpassing the disk. — 

 Northern Rocky and Cascade Mountains, Montana, Uanbg, Sargent, at Woodruff's Fails, the 

 tips of involucral bracts strongly recurved.' Jlount Paddo, Suksdorf, Howell. Also Hud- 

 son's Bay, Burke, and N. Labrador, named by Steetz, E. Drcebachensis, var. hirsutus. Pass- 

 ing into that species or form. 



~~E. armeriaefolius, Tdkcz. Sparsely hispid-hirsute or the leaves glabrous and most of the 

 (narrowly linear and elongated) cauline bristly-ciliate : inflorescence more racemose and 

 strict : involucre sparsely hirsute : rays filiform, extremely numerous, slightly surpassing the 

 disk, whitish, no filiform rayless flowers seen (even in Siberian specimens, though described 

 by Turczauinow). — Cat. Baik. & DC. Prodr. v. 291 ; Ledeb. Fl. Ross. ii. 489 ; Gray, Proc. 

 Am. Acad. viii. 648, & Bot. Calif, i. 326. E. lonchophyUus, Hook. Fl. ii. 18. E. gl'abratus, 

 var. minor. Hook. 1. c, partly. E. racemosus, Nutt. Trans. Am. Phil. Sue. 1. o. 312.— Sas- 

 katchewan and along the Rocky Mountains to Colorado, mountains of S. Utah, Xevada, and 

 the Sierra Nevada, California. (N. Asia.) 



§ 3. C^NOTtJs, Nutt. Rays of the small and narrow seemingly discoid (and 

 mostly thyrsoid-paniculate) heads inconspicuous, little if at all surpassing the disk 

 or pappus ; the narrow ligule always shorter than its tube, often shorter than the 

 style-branches, or even obsolete : disk-flowers sometimes few, with usually 4-toothed 

 corolla : annuals or biennials, with the aspect of Coii.yza, and passing into that 

 genus : the pappus in the genuine species simple : bracts of the involucre not 

 rarely somewhat unequal and imbricated. — Gen. ii. 148 ; Benth. & Hook. Gen 

 ii. 281. 



*, Floccose-lanuginous with white wool, destitute of either hirsute or viscid pubescence 



^■low,°£?^^^'^^; w "ki ^ ^°T " *^™ ^'^^- ''^^""S ^''^ l^^^'J^ "° ^l™°st l^'-^fless branches : 

 lower leaves spatulate-obloug, obtuse, serrate near the apex (inch lono-) • upper lijiear entire • 



F^ng-oWe flat calous-margmed: pappus completely simple, lomewhat' deciduous in a 

 rmg. J.L w right, n. 77. — b. Arizona, on the Sanoita, ]Vr;,,l,l. 



* * Lightly araefenoid, but green and.at length naked, somewhat viscid-pubescent. 



viigate racemiform leafy thyrsus : leaves ol,long-linear ,.r lanceolate (incl, or Ics lono-) spar- 

 ine triinerhilhl "" r'?-*'"" ^'."-^^-l-'-'^'^. «- '-e partly adnate-daspi:^ ' Zl 



Moun^ Graham at'9 ono f'f ^' ^"'Y'"'' '" ''''''"'" ^^P' '■'■ l^^, not (^.ra;. -Arizona, on 

 Mount Graliam at 9,000 feet, Rothrock. (Mex., Srhnffner, Parr,/ & Palmer; &,.) 



* * * Pubescence liir.ute or his,,i,l, neither lanate nor viscid, very leafy. 



-I- Introduced weed : heads fully 3 lines hi'Wi 



'B L,xiF6rius, WiUd A foot or two high, rather strict, bearing loosclv pnnicnlatc heads 



lursute,also somewhat scabrous with minute appressed pubescence : uSer/^^^f narrowly 



