2i50 coMrosiT.r.. (compositk family.) 



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

 Var. MONTANA. Stem manifest, dccumhent ; upper leaves nearly oppoi-ite. 

 (Ilyoseris montana, Mirhx.''.) — Damp soil, Florida, and northward ; the variety 

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



84. HIERACIUM, Toum. 



Heads many-flowered. Scales of the involucre im])ricatcd, or in 2 rows ; the 

 outer row short. Receptacle nearly naked. Achcnia not hcakcd, commonly 

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

 white hairs. — Perennial herbs with alteniate 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 holow, rough above ; 

 panicle somewhat corymt)osc ; leaves oval, sessile ; the lowest spatulate-oblong, 

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

 drical. (II. Marianum, Ell.) — Open woods in the ui)per 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 ; achcnia narrowed upward. — 

 Dry sandy soil, Florida, and northward. Sept. and Oct. — Stem l°-2° high. 

 Lowest leaves spreading on the ground. 



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

 oblong-obovatc, 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, smootliisTi ; achcnia linear. — Shady soil in the uj)per districts. 

 May -July. — Stem 1° - 2° high. 



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

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

 flowcred ; involucre smooth ; aehenia short, not narrowed upward. — Open 



woods along the mountains, Georgia, and nortliward. Aug. and Sept. — Sti-m 

 2° - 3° high. Peduncles filiform. 



85. NABALUS, Cass. 



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

 and several short exterior ones. Receptacle naked. Achcnia linear-olilong or 

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

 stniw-colored or brownish bristly hairs. — Perennial herbs, witli hitter tuberous 

 roots, entire or variously lobcd 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 variou'^ly 3 - S-lobed or parted ; tlic lowest petioled ; the up- 

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



