COMrOSIT.E. (COMPOSITK FA^IH.Y.) 211 



crowded in numerous erect rnremos, forminrj an amjiJc pi/rnnn'dal or lln/rsi/orm pan- 

 iclc ; peduncles and ])ediccls roM;;li-hiiiry ; scales of the cylindrical involucre 

 oblong, olitiise ; rays about 5, large. — Var. angi:st.\ta is a dwarl Ibrin, witli 

 the racemes short and clustered, forming a dense interrupted or compound spike. 

 — Copses, Maine to Wisconsin and southward. — A very handsome species; 

 the lower leaves 4'-G' long and 2' -4' wide in the larger forms. 



9. S. petiol^ris, Ait. MinHtely himrij or downij ; stem strict, simple, (1°- 

 :\° higii) ; harts smull (.}'-2' long), omil or oUomj, mucronatc, veiny, rough-ciiio- 

 late ; the ni)per entire and nhntptly vera siml-pdiohcl, the lower often serrate and 

 tapering to the base; heads ftw, in a wand-like raceme or panicle, on slender 

 bracted pedicels ; rays about 10, elongated : scales of the piihescent involucre 

 lanceolate or linear-awl-shaped, the outer ones loose and spreading, 7nore or /ess 

 foliuceous, — especially in var. SQUARnuL6sA, Torr. & Gr. — S. W. Illinois 

 (Dr. Kiujdiiirtnii), and southward. — The name is misleading, as the leaves are 

 hardly pctioicd. 



10. S. Virga-atirea, L. Pubescent or nearly glabrous ; stem low (6'- 18' 

 high) and simple ; leitces lanceolate or oldanceolatr, or the lowest spatulute or Miptical- 

 oliovute and jietioled, serrate with small appresse.d te(th or nearly entire ; racemes 

 thyrsoid or simple, narrow; scales of the involucre lanceolate or linear, acute; 

 rays 8-12. — An extremely variable species in the Old World and in our north- 

 ern regions ; jjcrhaps including several. (Eu.) 



Var. alpina, Bigel. Dwarf (l'-8' high), with few (1-12) pretty large 

 lieads (.3" -4'' long, becoming smaller as tliey increase in number) ; leaves thick- 

 ish, mostly smooth; scales of the involucre lanceolate, acute or acutish ; rays 

 about 12. — Alpine region of the mountains of Maine, New Hampshire, and 

 New York; and shore of Lake Superior. 



Var. htimilis. Low (6'- 12' high) and smooth, bearing several or numer- 

 ous loosely thyrsoid smaller heads, which, with the peduncles, &e., arc mostly 

 somewhat glutinous; scales of the involucre obtuse; rays 6-8, short; leaves 

 varying from narrowly lanceolate and nearly entire to oblanceolate and serrate. 

 (8. humiHs, Pursh, Torr. <f- Gr.) — Itocky banks, W. Vermont, and along the 

 Great Lakes northward. Also on islands in the Susquehanna, near Lancaster, 

 I'cnn., Prof. Porter! Great Falls of the Potomac, Virginia, Dr. Pol)l)ins.' — At 

 the base of the White Mountains of New Hampshire, on gravelly banks of 

 streams, occurs a form, with the minutely pubescent stout stem I°-2° hi;;h, the 

 leaves larger and broader, and the heads very numerous in an ample compound 

 raceme ; the rays occasionall}' almost white. 



11. S. thyrsoidea, E.Meyer. Stem stout (l°--l° hvj^h),vand-liLr,imWs- 

 cent near the summit, simple ; leaves thin, ovate, inrrjularli/ and coarsely serrate 

 viih sharp salient teeth, laryc ( t'-4' long), all but the uppermost abruptly con- 

 tracted hnolonrj and uianiined petioles ; heads lanjc (.")"- 6" long), niany-flowercd, 

 crowded in an oblong or wand-like raceme or contracted ])anicle (2'- 18' long) ; 

 scales of the involucre loose and thin, long, lanceolate, taper-pointed; rays 8- 

 10, elongated ; aehenia smooth. (S. Virga-aurea, /'"/Ji/i. S. leiocarpa, Z>C'.) — 

 Wooded sides of niountaius, N. Maine to New York (houth to the CatskiUs), 

 shore of Lake Superior, and northward. — Very near an European form of S. 

 Virca-uurea. 



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