208 DESCRIPTION OF ASTER; DIVARICATI 
others as is common) an upper cauline leaf, and an axile leaf of occasional but less 
typical form. 
A. tenebrosus Bu. in Br. and Br. Ill. Fl. 3: 357. f. 3736. 1898, with 
original description : 
“Stems solitary or scattered, glabrate, striate, about 3 ft. high. 
Leaves very thin and smooth, slender-petioled, broadly oblong, 
coarsely toothed with remote acuminate teeth, abruptly long- 
acuminate at the apex, the basal sinus broad, rounded, shallow, 
except in the lowest ones ; leaves of the inflorescence lanceolate, 
subentire, sessile, sometimes 4 in. long. Inflorescence broadly 
corymbose ; heads about 4 lines high, often 144 broad, rays 
usually 9 to 12; disk pale yellow, becoming purplish brown, the 
florets funnel-form with a long slender tube; outer bracts chiefly 
elongated-triangular, acute, green ; the others linear, obtusish, the 
green tips lance-linear ; achenes generally glabrous. — In moist 
dark woodlands, New York to Virginia. Peculiar in its large 
dark leaves with coarser teeth than in the next species [ A. divari- 
catus |. u 
Sud plenis y remarks. Stems green, or greenish brown, 
erect but easily made decumbent, and often repeatedly geniculate. 
Leaves rather pale beneath, the larger ones often 6 in. long, an 
2 or 3 in. broad, or sometimes even 4 in., very thin and tissue- 
like, usually smooth when dry, and in growth having a smooth 
surface like dressed kid. 
Sinus, where best developed, in a few lower caulines, broad, 
deep, somewhat rectangular. Most leaves have a brace-base 
with double curve and almost truncate. 
Leaf-form oblong-ovate with strongly incurved and entire 
acumination. Teeth chiefly coarse, strongly outflung, mostly 
between curvescent and couchant in form, with occasional typical 
examples of both, and with aquiline teeth appearing toward the 
rounding base, or sometimes all along the margins. 
Petioles slender, distinct but not long in proportion to the 
leaf, being commonly less than half the leaf-breadth. They con- 
tinue well into the inflorescence. 
Axiles and rameals low-serrate, ovate-lanceolate to lanceolate, 
their petioles often becoming winged. Finally the bracteals be- 
come sessile and sometimes wholly entire, while still remaining 
long, conspicuous and streamer-like ; 30 such on a large in- 
florescence being seen, about 2% in. long, and ¥% in. or more 
broad. 
Inflorescence subject to early arrest at main stem and subse- 
quently at main branches, each soon overtopped irregularly by 
proliferous branches, the whole sometimes 16 in. broad and high. 
maller inflorescences and those of only a few heads, often, how- 
ever, remain level or convex-topped. 
