194 COMPOSITE. Aster. 



Var. Eatoni. Rather tall (2 or 3 feet high), branching, bearing nnmerous and 

 smaller paniculate or glomerate heads, and comparatively narrow lanceolate leaves : involu- 

 cre loosely imbricated ; outer aud sometimes inner bracts foliaceous, either erect or squar- 

 rose-spreading : transitional between A. foUuceus and A. Oregatitts, aud some specimens 

 approaching A. Chdintssonis. — A. Douglasii mainly, Eaton, Eot. King Exp. 141. — Open 

 ground or woods and along streams, Erit. Columbia to California along the borders of 

 Nevada, and northeastward to Montana. 

 A. amplus, Lindl. Glabrate : stem over 2 feet high, strict, robust, remotely leafy : leaves 

 thiunish, acutely and saliently serrate or serrulate, or some entire, oblong or oval-lanceolate; 

 cauliue 2| to 5 inches long, mostly with narrowed partly clasping base ; radical larger (over 

 inch and a half wide), tapering into very long wing-margined petioles: heads several on 

 rather naked peduncles : liracts of the involucre lanceolate and linear, of about two series, 

 loose, of e(pial length, ,all rather shorter than the developed disk. — Hook. El. ii. 10, & DC. 

 1. c. 236 ; Torr. & Grav, Fl. ii. 137. — Northern Rocky Mountains, Drnmmond. Not since 

 collected, seen only in herb. Hook., perhaps rather of the following group. 



++ ++ Cauline leaves either conspicuously contracted at base, some as it were into a winged peti- 

 ole, or with auricul.ite-clasping insertion, or with both: involucre lax. 



= Narrowed base of leaves not cordate- or auriclate-clasping at insertion. 



A. Elliottii, Torr. & Gray. Glabrous, or the stout (2 or 3 feet high) stem minutely pubes- 

 cent, very leafv to the corymbosely paniculate inflorescence : leaves thickish, oblong-lanceo- 

 late, serrate with small aud appressed rather obtuse teeth, tapering below into the narrowed 

 and as if wiug-petioled base ; upper 4 to 6 inches and lowest a foot or less long, including the 

 channelled winged petiole : heads numerous, nearly half-inch high : bracts of involucre all of 

 nearly equal length, loose, very Uiirrowly suliulate-linear, their green tips mostly spread- 

 ing: rays narrow, "bright purple," 5 lines long. — Fl. ii. 140; Chapm. Fl. 204. ^4. puniceus. 

 Ell. Sk. ii. 355, by the detailed descr. and specimen, excl. char, from Willd. — Swamps iu 

 the low country near the coast, S. Carolina to Florida. 



A. patulus, Lam. Glabrous or somewhat pubescent, either low or 2 to 4 feet high, with 

 loose flowering branches : leaves ovate- or oblong-lanceolate, sharply serrate in the middle, 

 acuminate at liotli ends, the lower into wing mai'gined petiole or attenuate base, even the 

 upper with obscure if any auriculate insertion : heads loosely paniculate, about 4 lines high : 

 bracts of involucre linear, erect or nearly so, loosely imbricated, the outer more or less 

 shorter: rays light violet or purple, varying to white. — Diet. i. 308; DC. Prodr. v. 234. A. 

 Tradescanti, Hoffm. Phyt. Blatt. 86, t. D, f. 2, not L. A. pallens & probably A. pnecox, 

 "Willd. Enum. Suppl. 58. A. Cornuti (Wendl. ex Nees, where published, aud why Corniiti?) 

 & A. acH'iiindfiis, Nees, Ast. 58 & 60. A. abbreviatns, Nees, Syn. Ast. 16. — Canada and 

 New Brunswick to E. New England, chiefly known in cultivation : introduced into the Paris 

 garden in the days of Tournefort and Vaillant. There is a low form in the gardens, early 

 flowering, having weak aud often decumbent stems, .as Lamarck characterized his species. 

 The taller plants flower later. 



= = Base of most cauline leaves auriculate- or cordate-clasping at insertion : involucral bracts 

 loose, disposed to be equal in length and the outer foliaceous. 



a. Atlantic species, chiefly Northern. 



A. tardiflorus, L. A foot or two high, glabrous or stem somewhat pubescent (not hispid), 

 bearing corymbosely disposed heads: leaves lanceolate or oblong-lanceolate, gradually acu- 

 minate, mostly with contracted or tapering base and with auriculate or obliquely semi- 

 auriculate insertion : heads about 5 lines high : rays pale violet. — Spec. ed. 2, ii. 1231 (founded 

 on plant cult, in hort. Upsal., low, with weak stems, which grew for 18 years before it 

 flowered, and then late, whence the name : represented in the herb, by two specimens of the 

 non-flowering, with the semi-amplexicaul spatulate-lanceolate leaves well marked, and one 

 flower-bearing), not of later authors and gardens. A. vimineus, Nees, Ast. 68, in part, not 

 Lam. nor Willd. — Along streams. Lower Canada and New Brunswick to Labrador. Nearly 

 related to A. patulus on the one hand, to the succeeding and to A. puniceus, var. Icevicaulis, 

 on the other. Ordinarily not a late-flowered species. 



A. prenanthoides, Muhl. A foot or two high, nearly glabrous, or the slender stem 

 pubescent in lines, bearing loosely corymbiform cymose heads : leaves thiu and elongated 



