250 COMPOSITE. (COMPOSITE FAMILY.) 



others linear, elongated, entire or toothed ; achenia somewhat top-shaped. 

 Var. MONTANA. Stem manifest, decumbent ; upper leaves nearly opposite. 

 (Hyoseris montana, Michx. ?) Damp soil, Florida, and northward ; the variety 

 on the mountains of North Carolina. March -May. Scapes 6'- 12' high. 



84. HIERACIUM, Tourn. 



Heads many-flowered. Scales of the involucre imbricated, or in 2 rows ; the 

 outer row short. Receptacle nearly naked. Achenia not beaked, commonly 

 terete or spindle-shaped, ribbed. Pappus a single row of persistent brownish- 

 white hairs. Perennial herbs with alternate entire or toothed leaves, and single, 

 corymbose, or panicled heads of yellow flowers. Involucre, in our species, in 2 

 rows, the outer short and bract-like. 



1. H. scabrum, Michx. Stem stout, leafy, hirsute below, rough above ; 

 panicle somewhat corymbose ; leaves oval, sessile ; the lowest spatulate-oblong, 

 hirsute; peduncles and involucre tomentose and glandular-hispid ; achenia cylin- 

 drical. (H. Marianum, Ell.) Open woods in the upper districts. Aug. and 

 Sept. Stem l-3 high. Heads large, many-flowered. 



2. H. Gronovii, L. Stem leafy and hirsute below, naked and smoother 

 above ; leaves entire or denticulate, hirsute ; the lowest spatulate-oblong ; the 

 upper small, sessile ; panicle narrow, elongated ; achenia narrowed upward. 

 Dry sandy soil, Florida, and northward. Sept. and Oct. Steni l-2 high. 

 Lowest leaves spreading on the ground. 



3. H. venosum, L. Stem slender, nearly leafless, smooth ; lowest leaves 

 oblong-obovate, smooth, or hirsute on the veins beneath, often veined with 

 purple ; the others (1-3) small and remote ; heads small, in a spreading corym- 

 bose panicle, smoothish ; achenia linear. Shady soil in the upper districts. 

 May -July. Stem 1 - 2 high. 



4. H. paniculatum, L. Stem slender, leafy, villous below ; leaves thin, 

 lanceolate, denticulate, acute, smooth; panicle divaricate ; heads small, 12-20- 

 flowered ; involucre smooth ; achenia short, not narrowed upward. Open 

 woods along the mountains, Georgia, and northward. Aug. and Sept. Stem 

 2 - 3 high. Peduncles filiform. 



85. NABALUS, Cass. 



Heads 5 - 20-flowered. Involucre cylindrical, composed of 5 - 14 linear scales, 

 and several short exterior ones. Receptacle naked. Achenia linear-oblong or 

 cylindrical, furrowed, glabrous, not narrowed upward. Pappus of numerous 

 straw-colored or brownish bristly hairs. Perennial herbs, with bitter tuberous 

 roots, entire or variously lobed leaves, and nodding heads of yellowish white or 

 purplish flowers, in short racemes or clusters. 



1. N. albus, Hook. Smooth; stem paniculate, purplish ; leaves acutish, 

 angled, toothed, or variously 3 - 5-lobed or parted ; the lowest petioled ; the up- 

 permost nearly sessile ; racemes short, spreading ; involucre purplish, of about 



