288 DESCRIPTION OF ASTERS ; CURVESCENTES 
Leaves very soft and thin, very quickly wilting, dull green, 
glabrate above, villous or webby-hairy beneath, firm when dry an 
the lowest somewhat roughened. 
Teeth curvescent-serrate, long and coarse below, close and 
approaching the slit-serrate type on the middle leaves, slit-serru- 
late above. 
Petioles pale green, slender, villous, being loosely covered with 
long webby hair but not ciliate; about the length of the leaf till 
the upper caulines are reached, then smooth and shorter 
Sinus very irregular, deep and enlarged within, narrow, but 
becoming broad an d Dii in the middle caulines. Basal lobes 
highly unequal, narrow and rounded, overlapped, with strongly 
lop-side effect 
Veins about 7 pairs, strongly upcurved, dark above, pale below. 
Inflorescence a flattish-convex corymb, about 8 in. high and 
broad or less, quite denuded, its slender longer branches elegantly 
upcurving and suberect, their bracteals very inconspicuous, lance- 
linear and long-acuminate. 
Heads the largest of the Schreberan species, 7, 8 or even 9 
sixteenths of an inch high. 
Bracts rather pale, the lowest triangular-oblong and acutish, 
the middle oblong and truncate or obtuse, the inner ones more 
conspicuous and numerous, attenuate and silvery-scarious. Green 
tips rather strongly developed. 
Rays 12 or even 14, very long and narrow, greenish-white, 
nearly flat, recurving with age, with 4 narrow faint greenish longi- 
tudinal lines, and with 3 sharp teeth at the attenuate apex. 
Disk-flowers about 40, pale yellow, soon virescent and be- 
coming dark greenish or olivaceous-brown ; the 5 linear lobes very 
long and divaricate, distinctly greenish like those of A. umbellatus. 
The long thread-form tube gradually enlarges, with a slight swell- 
ing just below the lobes. Achenes long, fusiform. Pappus rufes- 
cent in 3 years. 
Habitat, stream-banks close to the water's edge among over- 
shadowing bushes, seen at various places along the Schoharie in 
the Catskills ; as 
unter, east bridge, Se. 5, '99; central island, Se. 6, 99; near head of Stony 
Clove, near Quick's bridge, Se. 7, '99. 
Allies. A. amnicola seems collaterally akin to A. rectifolius, 
cence, to falcate-acute leaf-form, etc. Inner bracts resemble those 
