110 DESCRIPTION OF ASTERS; DIVARICATI 
TORREY AND Gray, 7Z. N. Am. 2: 104. My 1841. 
er corymbosus (Ait.): Stem slender, often flexuous, terete ; leaves membrana- 
ceous, co enam or incisely and unequally serrate with sharp spreading piis conspicu- 
ously acuminate, all but the uppermost cordate and on slender naked petioles, ovate or 
ovate-lanceolate; heads loosely corymbose; involucre shorter than the aui the ex- 
terior scales roundish-ovate ; rays (white) 6-9. [Repeated in Torrey's Fl. N. Y. 1: 
335. 1843.] 
Dry woodlands, Canada and Northern States! To the middle country or moun- 
tains of the Southern States! July-Aug. Stem 1-2 ft. high, glabrous, or pubescent 
towards the summit, where it branches into a loose (often somewhat leafy) corymb. 
Leaves very thin and membranaceous, 2—4 or 5 inches long, strongly serrate with sharp 
and spreading rather distant and irregular teeth, which are tipped with conspicuous 
mucronate-acuminate points, glabrous or sparsely-hairy above, and often hairy on the 
idrib and veins beneath, as also the slender petioles, varying from broadly ovate to 
ovate- cme iy but all except the uppermost cordate; the upper rarely with margined 
petioles ; the uppermost sessile and sparingly serrate. Heads smaller than in the fol- 
lowing species, the outer scales of the involucre (smooth, except the ciliate-pubescent 
margin) rounder and less rigid. Pappus tawny. Achenia neatly glabrous when mature 
Repeated, condensed, in Torrey's Fl. N. Y. 1: 335.] Lindley cites the Aster cordi- 
folius of Michaux as a synonym of this species, on the authority of a specimen communi- 
cated by A. Richard; but if we mistake not, an chief specimens of his proper herba- 
rium accord with the Linnaean A. cordifolius.' 
CHAPMAN, Southern Flora, ed.i, 198. 1860; and 
edatia 3. 
** Aster corymbosus sii Stem slender, smooth ; leaves on slender petioles, thin, 
coarsely serrate, sconto $ ; the lower ones cordate, the upper oblong; involucre 
shorter than the disk, the Sim obtuse; rays 6-9, white. Shady woods in the upper 
districts, Georgia and northward. Sept. and Oct. Stem 1-2 ft. high, leaves 2 to 4 
n, long, corymbs loose. 
Gray, Syz. F7. N. Am. Y: 174. 1884. 
** Aster corymbosus, Ait. Stem slender, 2 ft. high, sometimes flexuous, terete ; 
leaves membranaceous, much longer than wide, gradually or very prominently acuminate 
and acuminately serrate; involucre only one fourth inch high, little surpassing the rather 
broadly ripe teres — akenes: rays 6 to 9, white.— Woodlands, Canada to 
upper part of Georgia 
1888, Oct.-Dec. My preliminary survey of the 
Aster divaricatus forms about Washington, D. C., written at this 
time, distinguished 50 forms ; but instead of publishing, was held 
for verification in the field, and was so tested during 1889-1894, 
while still residing at Washington. The result was that perhaps 
half of the forms were determined to be no more than forms; 
about 12 were held over to be tested further (one of these a 
ing as species in the present work for the first time, A. ebeneu 
and one in Small’s Southeastern Flora, 1903, A. stiletti formis) 
The other 13 were published as species or varieties, in the 
VO TEE n a EER A OAN EA eg 
