9 6 4 



FLORA. 



racemosely unilateral on the branches, short-peduncleil or sessile, usually numerous 

 and crowded; involucre turbinate, its bracts linear-oblong, obtuse or acutish, imbri- 

 cated in about 4 series, their short green tips appressed or slightly spreading; rays 

 numerous, short, white or pale purple; disk-flowers purple; pappus white; achenes 

 minutely pubescent. In dry or moist soil, N. S. to western Ont., south to N. Car., 

 La. and Tex. Called in Maryland Rosemary. Aug.-Oct. 



Aster lateriflbrus glomerellus (T. & G.) Burgess. Chiefly unbranched, with thehabr 

 of Solidago caesia ; leaves hispidulous above, oblong-lanceolate, dull green, the teeth very 

 sharp and straight ; heads glomerate in the axils, often somewhat spicate toward the sum- 

 mit of the plant, sometimes also on short branches. In deep woods, N. Y. to Va. 



Aster lateriflbrus thyrs6ideus (A. Gray) Sheldon. Ashy-pubescent; leaves ovate to 

 lanceolate; branches ascending, rather stiff, mostly short; heads usually densely thyrsoid- 

 paniculate, less markedly secund than in the type. Me. to N. Y., Ont. and 111. 



Aster lateriflorus grandis Porter. Taller and larger-leaved than the type, the branches 

 spreading; leaves lanceolate, sometimes 15 cm. long and nearly 25 mm. wide; heads mostly 

 larger, rather loosely paniculate. In shaded places, southern N. Y. to Ky. and 111. 



Aster lateriflorus p^ndulus (Ait.) Burgess. Leaves linear-elliptic, conspicuously 

 drooping, remotely appressed-serrulate, often with narrowly margined petioles, rough ish 

 when dry; branches long, slender, often pendulous; heads long-peduncled; rays and 

 bracts often purple-tinged. In thickets, N. Y. to Va. 



Aster Iaterifl6rus horizonUlis (Desf .) Burgess. Branches long, slender, widely spread- 

 ing; leaves firm, those of the branches very small, mostly entire; heads very numerous; 

 rays rather large. Southern N. Y. to Va. 



71. Aster hirsuticaulis Lindl. HAIRY-STEMMED ASTER. (I. F. f. 3800.) 

 Stem slender, erect, 4-9 dm. high, pubescent, nearly or quite to the base, the usually 

 short branches spreading or ascending. Leaves thin, glabrous above, usually pubes- 

 cent on the midvein beneath, serrate with a few appressed teeth, or entire, linear- 

 lanceolate to lanceolate, sometimes 15 cm. long, 4-14 mm. wide, sessile, or the basal 

 ones spatulate and petioled ; heads more or less secund on the branches, densely or 

 loosely clustered, often also solitary or few in the lower axils; bracts of the involucre 

 in 3 or 4 series, linear-lanceolate, acuminate or acute; rays white, about 4 mm. 

 long. In woods and thickets, Me. to N. Y., Penn. and Ky. 



72. Aster vimineus Lam. SMALL WHITE ASTER'. (I. F. f. 3801.) Gla- 

 brous or nearly so; stem slender, divergently branched, 6-15 dm. high. Stem- 

 leaves linear- lanceolate, entire, or with a few low teeth, 7-12 cm. long, 4-8 mm. 

 wide, acuminate, narrowed to a sessile base, those of the branches much smaller; 

 heads very numerous, 6-IO mm. broad, 4-6 mm. high, generally densely racemose - 

 secund, short-peduncled; involucre broadly turbinate, its bracts linear, acute or 

 acutish, green-tipped, appressed; rays numerous, about 4 mm. long, white; pappus 

 white; achenes minutely pubescent. In moist soil, Ont. to Mass.. Fla., Minn., 

 Kans. and Ark. Aug.-Sept. 



Aster vimfneus foliolfcsus (Ait.) A. Gray. Branches ascending, very leafy; heads 

 paniculate, scarcely secund, less densely clustered. Mass, to Va., III. and Mo. 



Aster vimfneus Columbiinus Britton. Minutely pubescent, 6-12 dm. high, the slender 

 branches ascending; leaves linear to linear-lanceolate, those of the stem deflexed; heads 

 about 25 mm. broad; rays red-purple. Perhaps a distinct species. D. C. to N. Y. 



Aster vimfneus saxatilis Fernald. Low, 1.5-6 dm. high, the leaf y-bi act eate branches 

 bearing few or solitary heads, 1-1.5 cm - broad; stem-leaves sometimes slightly clasping at 

 the base. Shores and banks, Me., Vt. and Quebec. Perhaps not properly referred to 

 this species. 



73. Aster multifldrus Ait. DENSE-FLOWERED ASTER. WHITE W T REATH 

 ASTER. (I. F. f. 3802.) Stem strict, much branched and bushy, grayish-strigose, 

 3-20 dm. high, the branches ascending or spreading. Leaves rigid, linear or 

 linear-oblong, entire, mostly obtuse, sessile or slightly clasping at the base, 

 strigose or glabrate, those of the stem 1-2.5 cm. long, those of the branches very 

 small and crowded; heads 6-8 mm. broad, densely crowded, nearly sessile; 

 involucre turbinate, 4-6 mm. high, its bracts coriaceous, pubescent, in 3 or 4 

 series, their short green tips obtuse or mucronate, spreading; rays IO-2O, white, 

 3-4 mm. long; pappus brownish white; achenes puberulent. In dry open places, 

 Me. and Ont. to S. Dak., Ga., Tex., Ariz, and Mex. Aug.-Nov. 



74. Aster exiguus (Fernald) Rydb. CILIATE-LEAVED ASTER. Stem much 

 branched and bushy, 3-10 dm. high, rough-pubescent with short divaricate hairs; 



