ASTER CURVESCENS 251 
Middle leaves ovate, remaining leaves to the inflorescence 
. hardly at all shorter but progressively narrowed to lanceolate, 
serrulate. Axile leaves rapidly reduced in size and soon obsoles- 
cent; the rameals few and minute, the inflorescence thus seeming 
naked. 
Teeth even, rather close, on the radicals chiefly 1% in. long, 
projecting onte d ¥% in. or less, much more shallow on the 
cauline leaves ; characteristic form curvescent, or slightly convex 
on the back, concave in front, tipped at the front projection with 
a long slender abrupt aculeus which is green and membrane 
margined. 
Inflorescence usually semicircular on pressing, 3 in. across by 2 
in. high, orless. Heads 25 or less, small ; branches widely patent, 
but not at right angles as in best-developed plants of A. glomeratus ; 
pedicels 14 in. long in flower, capillary, minutely strigose in lines. 
Principal bracts very narrow, little seriate, slenderly linear-atten- 
uate from base to acutish apex in most inner examples ; most outer 
ones obtusish or seeming acute by infolding ; all smooth or with 
mere trace of ciliation or hair, glume-like and scarious through- 
out, without midrib or green tip ; except in the few short incon- 
spicuous outer bracts, which are ovate and thickened. 
Rays bidentulate, quickly deciduous, persistently 8, rarely 10 
Or 12, disks about 20, purple-brown or black when 
Achenes deep brown, smooth, the darker striae conspicuous 
but delicate, slender- fusiform, with conspicuous pale terminal 
annulus marked by short truncated grooves. 
Habitat, loose, gravelly soil and steep banks, near streams, 
especially in narrow ravines, in shade, chiefly in the Middle States. 
M à 
, Sullivan Co., Meriden woods, between Grantham Mt. and Connecti- 
cut R. res Wood, as A. corymbosus, in hb. Can 
Ms., Zaconics, Bashbish ravine and its iani to 1600 ft. alt., I9gOI, 1903, 
I904, Bu., and x Farm, Au. 1903, 1904. 
N. Y. vic.? in Torr. hb., early determined by Boott and Torrey as Svotia 
Schreberi and dg md as A. macrophyllus 
N. V. vic.? in Gray hb., dating lion Gray's studies with Torrey, at first 
labelled by Guy ** intermediate between 4. — MÀ and A. macrophyllus? by 
Gray am gey as ** Boso ie PEREN OPMS 
——, Topping, be no. Ln in U. E Nat. Hb. 
x Mg Cais, aen Cha , grove; to IO alt, Se., hos Bu. 
"NX ey, as A oS (iu: hb. Mo. Bot. 
W.N. Ya Choo Co., irn Ledge, '73, Bu., Sheridan, Reed’s Shanes, 
Au. 797; serch High Br. 
untingdon Co., aeia er 1844? T. C. Porter in hb. Porter, and 
Mani '50? hb. Porter. 
