210 COMrOSIT.?!. (rOMI'OSITK FAMILY.) 



oliite, acute, hairy. — Opt-n /i;ra.<.sy juia- liarnns, Florida, and westward 

 Sept. — !Steiii 6-18' liigli. Ik-ads rart-h' ractiiio.se. 



2. C. tomentOSUS, 'J'orr. &. liray. Stem siiiijilu, tonieiitoHC ; leaves 

 smootli nr liain, ^laiiil-jiointi'd ; the lowest oldoiig or lauceolate, 3-rib)>ed, 

 uarrowed ijito a long ela.-<i(ing jtetiole, the other.-* iiuiiierous, small, oblong or 

 oval, sessile ; corymb lo<j.se liowered ; scales of the involucre very tomeuto.se, 

 the outer ones short, ovate, the iuuer oblong, acute. — Low pine barrens, 

 North and Soutli Carolina. Sept. — Stem 2° high. 



3. C. COrymbosus, Torr. & Gray. Stem tall, hairy; leaves smooth or 

 more or less hairy; the lowest cuneate-lanceolate, obtuse, 1- or obscurely 3- 

 ribbed ; the others numerous, small, obh^ng, sessile ; heads aliout 20, closely 

 corymbed ; scales of the involucre nearly smooth and equal, oval, very obtuse, 

 broadly margined. — Margins of swamps, Florida to N'orth Carolina. Sept. 

 — Stem 2° -4° higii. 



4. C. bellidifolius, Torr. & Gray. Smooth ; leaves spatulate-lanceolate, 

 3-ribbed, obtuse ; heads few in a loo.se corymb ; scales of the involucre oblong, 

 obtuse, sparingly fringed on the margins; pappus slightly plumose. —Dry 

 sandy soil, Georgia to North Carolina. Sept. — Stems several from the same 

 root, 12' - 18' liigli. Heads sometimes pauicled. 



8. LIATRIS, Schreb. Button S.nakeroot. 



Heads few- or many-flowered, the flowers all similar and perfect. Scales 

 of the iuvolucre imbricated. Receptacle naked. Corolla 5-lobed. Achenia 

 nearly terete, narrowed at the base, about 10-ribbed. I'appus of numerous 

 plumose or bearded bristles. — Perennial herbs, with tuberous roots and sim- 

 ple stems. Leaves alternate, entire. Heads in spikes or racemes. Flowers 

 purple, often varying into white, commonly dotted with resinous particles. 

 * Scale f: of the involucre with petal-like or leafy tips: pappus plumose. 



1. L. elegans, AVilld. Heads very numerous in a cylindrical raceme, 

 4 - 5-flowered ; inner scales of the involucre petal-like, purple ; stem tomen- 

 tose ; leaves smooth, the lowest lanceolate. — Dry pine barrens, Florida to 

 South Carolina, and westward. August. — Stem 2° high. Heads show:y. 



2. L. squarrosa, Willd. Heads few or numerous, large, many-flowered, 

 cylindrical ; scales of the involucre with leafy spreading tips ; stem pubescent ; 

 leaves smoothish or hairy, long, linear, rigid, 3-. "j-ribbed. — Dry sandy .s(jil. 

 July - August. — Stem 1°-H° high. Heads 1' long, sessile or terminating 

 short branchlets. Corolla lobes hairy. 



» * Scales of the involucre not appendaged. 

 •*- Heads S-G^flowered : pappus conspicuously plumose. 

 3f L. Boykinii, Torr. «& Gray. Nearly smooth ; stem slender ; leaves 

 linear, dotteil ; heads 3 -4-flowered, rather closely spiked ; scales of the iuvo- 

 lucre smooth, lanceolate or linear, acuminate and spreading at the apex, as 

 long as the pappus. — Near Columbus, Georgia. August - Sept. — Stem 1° - 

 2° high. Spike 6' - 1 0' long. 



4. L. tenuifolia, Nutt. Smooth ; stem tall and slender ; leaves narrow- 

 linear or filiform, the lowest long and crowded ; heads .5-flowered, in a long 



