CARDUACEAE 1351 
S. Buckleyi T. & G. Stem 6-12 dm. tall, strict, strongly pilose above, 
leaf- blad r 
parsely so below: basal pure wanting: es oblong-obovate o 
din pe ARES, mostly em. long, 2.5-5 em. wide, hispidulous on 
veins sparingly Er RA below, thin, those of the lower leaves strongly 
crenate- snl n those of the upper entire or nearly so; petioles 1-5 mm. long: 
heads 7-8 mm. high: involueral bracts oblong-lanceolate, acute or acutish, his- 
pidulous and ciliate, the tips of the outer only spreading : achene blackish, 
te 
mewhat compressed.—Dry woodlands in limestone regions, Appalac hian 
Plateau, Ala. to Ill. and Mo.—Sum.-fall. 
5. S. E y Stem usually 5-8 ET dm. tall, bora ie leaves 
with ovate oblong-ovate blades em. g, wide, crenate- 
Ru eed -pubescent or -hirsute on "n sides; A Y% to T ngth of 
bl high; involueral bracts oblong, chartaceous, nearly 
smooth, usually whitish-yellow with the greenish midrib conspi cuously dilated 
above.—Dry banks, woods and a usually in acid soils, various provinces, Ga. 
to Mo., Ont., and N. B —Sum fall. 
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6. S. hispida Muhl. Similar to S. bicolor in habit, but with the heads usually 
slightly larger: involucral bracts narrowly oblon ng, firm, durer se, subherba- 
eous, Eis ed E with the green midrib obseurely to strongly 
ilated above.— anks and dry hillsides in limestone soils, Y various prov 
inces N of Du ch Ga. 3 Ark., Man., and Newf.—Sum.-fall, 
i S. LPs S rn Stem usually 5-10 (3-13) dm. tall; lower leaves 6-9 em 
ong, 1.8 n. wide, the blades ear) cat pi essentia ally Vedi on 
ei UN shallowly erenate: heads 8-1 . high: involuere campanulate: 
achen column nar, narrowly linear ed n woodlands, acid soils, various 
Pon Ga. to Mi iss. Wis., and Con 
8. S. Porteri Small. Stem 6-14 dm. tall, glabrous below, sparsely pubescent 
above, short-pubeseent in the in nflorescene ce: leaf-blades oblong- “oblanceolate, 
8-18 cm. long, 2.5—4.5 . wide, crenate-serrate, sparsely hairy o 
e braets oblong; achene linear- clavate, blackish.—Dry Md. Pied- 
mont of Ga.—Sum.-fall. 
S. puberula t t. Stem 3-10 dm. tall: basal rosettes conspicuous, their 
lea af- blades spatulate, 3-10 em. long, 1.5-2.5 em. wide, crenate-serrate, sparsely 
hispidulous-pube EAE on both sides; petioles as long or longer: involucral 
racts thin, the midrib obsolete: ligules of the ray rarely white: achene sks 
green, slightly dilated upward.—Dry open woodlands, acid soils, various pr 
inces, rs o Miss, Tenn., Que, and P. E. I., most common near the coa n 
—Sum.—fall. 
10. S. pulverulenta Nutt. Stem 4-12 dm. ape lower leaf-blades oblong- 
bovate or oblanceolate, 3-8 em. long, 1.2-2.5 em. wide, crenate-serrate, the 
petiole as long or longer: involucral bracts thin, with the midrib obscure: 
achene somewhat dilated upward.—Dry pi inelands, acid soils, Coastal Plain, 
Fla. to Ala. and N. C.—Sum.-fall. 
11. S. ignium Porter. Stem 2-8 dm. tall, pubescent above and in the in- 
florescence only, or sparingly loosely pubesce rà basal rosettes e 
lower Jea f- blades oblong-obovate or obovate, 3-10 cm. long, 2-5 wide, 
ian oe or serrate, hispidulous above aid pubescent ia: h mostly on 
the s; petiole usually shorter: en braets glabrou p e linear, 
obeunt ribbed. [S. montic oe T. & G. not Jor Maz i Polla 
alleghaniensis House] Dry w oods, in aeid pd Blue Ridge D Appalachian 
Plateau, *Ga,'* to «Ala, 7? W. Va., and Md.—Sum.—fall. 
