﻿480 Small : Studies in the Botany 



Helianthus glaucus. 



Perennial, deep green. Stems erect, 9-18 dm. tall, widely 

 branching, smooth, glabrous and glaucous : leaves opposite ; 

 blades somewhat leathery, firm, lanceolate, acuminate, sharply 

 serrate, very scabrous above, tomentulose beneath, narrowed into 

 short-margined petioles : heads rather small : involucres campan- 

 ulate, 8-10 mm. high: bracts few, lanceolate or oblong with a 

 lanceolate tip, more or less strongly spreading, white -ciliate : rays 

 yellow, oblong, 1-1.5 cm. long, often 5-7: disk becoming 1 cm. 

 broad : disk-corollas 4 mm. long ; segments lanceolate to oblong- 

 lanceolate : disk bracts commonly 3-toothed at the apex, minutely 

 pubescent: achenes 3-3.5 mm. long, oblong-obovoid, with 2 

 slender barbed teeth. 



In dry sandy soil, North Carolina to Georgia and Florida. 

 Summer and fall. 



During my collecting trips in various parts of the Southern 

 States I have met with a peculiar species of Helianthus for which 

 no provision is made in any of our descriptive works. The species 

 is most closely related to Helianthus Sc/iweinitsii from which it 

 diners in the smooth and glaucous stems, the more finely tomen- 

 tulose lower surfaces of the leaf-blades and the smaller heads and 

 narrower involucres with their broader and shorter bracts, many of 

 these usually recurving about the middle. Typical specimens were 

 collected by the writer on Dunn's Mountain, Rowan County, North 

 Carolina, Augu^_i8o4 ; Stone~Mounta i n and vicinity, Georgia, 

 and on Little Stone Mountain, Georgia, September, 1894. 



Helianthus polvphyllus. 



Perennial, deep green. Stems erect, 9-20 dm. tall, branch- 

 ing above, often stout, densely hirsute near the base, glabrous and 

 often smooth above : leaves numerous ; blades narrowly linear, 

 5-16 cm. long, entire, strongly revolute and apparently thick-fih- 

 form, curved : heads showy, few or numerous : involucres some- 

 what foliaceous : bracts linear-subulate, attenuate into subulate 

 tips, about 1 cm. long, some drooping or recurving : rays yellow, 

 narrowly oblong, 1.5-2 cm. long, readily shriveling : disks I-I-S 

 cm. broad, depressed : disk-corollas 3 mm. long ; segments tnan- 

 ular : disk bracts with a lanceolate or more slender middle tooth 

 and one or more lateral ones : achenes oblong-cuneate, 3 mn1, 

 long, striate, glabrous, awnless. 



In thickets, Georgia. Fall. 



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