Ordeb 70.— composite 413 



scales herbaceous, glabrous, oblong and obtase. — Sand Bills about 'Wilmington, N. 

 Car. Sts. numerous and much branched, 8 to 12' liigh. Scales leafy, green, 

 pappus rather plumoua than barbellate. Sept. (L. bellidilblia Mx.) 

 4 C. corymbdsus Torr. & Gr. Si. single, stout, erect, hairy; 1 vs. nearly smooth, 

 oblanceolate, obtuse, tapering to the base, the upper small, oblong, sessile ; hds. 

 about 20, 20-flowered, in a dense corymboug cyme; scales smooth, oblong-oval, 

 very obtuse, with a iroad, sca/ricms margin. — Swamp margins, N: Car. to Pla. 

 St. about 3f high. Fls. pale purple. Sept., Oct. (L. corymbosa Nutt.) 



7. LIATRIS, L. (Gr. At, an emphatic prefix, arpug, invulnerable ; 

 used as a vulnerary.) Heads few to many (5 to 60)-flowcred ; flowers 

 all ^ , tubular ; involucre oblong, imbricate ; receptacle naked ; pappua 

 of CO capillary bristles, mostly plumous ; achenia tapering to the slen- 

 der base, 10-striate; styles ranich exserted. — 21 Herbs with simple, erect 

 atems, alternate, entire Ivs., and handsome rose-purple fls. in spicate, 

 racemed, or paniculate hds., blooming from Aug. to Nov. 



§ Heads in (v corymb or tliyrse-liko paniclo. Boot fibrous Nos. 1, 9 



I IIiJucIs in 11 spike or a simple raceme. Root a roundish tuber (a). 



a Scales of the involucre colored and potaloid at their lengthened ends No, S 



a Scales not petaloid, green or slightly tinged at the end Cb). 



b Pappus evidently plumous. Corollas (13 to GO) hairy within .'..Nos. 4, 5 



b Pappus evidently plumous. Corollas (3 to 5) smooth within Nos. 6, 7 



b Pappus only barbellate (smooth to the naked eye) (c). 



Heads S to 7-flowored, — in one-sided spikes or racemes Nos. 8, 9 



— In a regnlar spike, raceme (or panicle) .' Nos. 10, 11 



C Heads 20 to 40-flowered, roundish, with rounded scales i .No. 12 



C Heads 7 to 15-flowerod. — Scales all similar, obtuse Nos. 13, 14 



* — Scales all, or the inner only acute Nos. 15, 16 



1 L. odoratlssima "Willd. Vanilla-plant. Deee's-tongue. Glabrous; ,rt.- 

 Ivs. obovate-spatulate, obtuse, 5 to l-veinod, tapering to the base, caulino oblong, 

 clasping; hds. about 8-flowered, in many cymes, constituting a large, loose- 

 corymb; scales all obtuse; fr. smoothish. — Pino barrens (Ta. ?)to Fla. and La., 

 abundant. Sts. 1 to 3f high. Corymbs leafless. Ms. bright purple. Sept., Oct. 

 — The fleshy loaves exhale a rich fragrance (compared to Vanilla) even for years 

 after they are dry, and are therefore by the southern planters largely mixed with 

 their cured tobacco, to impart its fragrance to that nauseous weed. 



2 L. paniCTilata Willd. St. simple, virgate, viscid-tomentous ; rt.-lvs. spatulate- 

 lancoolatc, acute, tapering to a petiole, caulino small, appreased, lauceolate-acu- 

 minato ; hds. about 5-flowered, in an oblong, dense, ihyrsoid panicle. — Damp pine 

 barrens, Ga., Fla. St. 2 to 3f high. Scales few, all obtuse. Fls. pale purpla or 

 white. Sept, Oct. 



3 L. elegang Willd. Villous-canescent above ; Ivs. glabrous, the radical oblan- 

 ceolate, 3 to 5-velned, cauline linear, the upper bract-like, spreading ; spike or ■ 

 raceme dense ; hds. oblong-cyUndrical, 4 to S-flowered ; scales lance-linear, pro- 

 longed into a colored, petaloid appendage longer than the fioVers ; pappus evi- 

 dently plumous. — A remarkable species, in pine barrens, Y^. to Fla. and Tex. 

 St. 3 or 4f high, ending in a spike 6 to 16' long. The purple appendaged scales 

 more showy than the florets. Aug., Sept. 



4 L. squarrosa Willd. Blazino Stau. Smooth or scabrous-pubescent; Ivs. 

 linear, lower ones attenuated at baso ; rac. flexuous, leafy ; hds. few, 20 to 40- 

 flowered, sessile or nearly so; invoL ovate-cylindrio ; scales large, squarroua- 

 spreading, outer larger, leafy, inner mucronaie-acuminate, scarcely colored; fls. 

 numerous ; pappus plumous. — A splendid plant, native N. Y. (Eaton) Penn. to 

 Fla. and W. States. Sts. 2 to 3f high, thickly beset with long, linear leaves. 

 Hds. 5 to 20, with large, brilliant purple florets. Aug. f It varies witk th« 

 heads only 12 to IS-flowered (Georgia, Feay), smooth or hairy, &s. 



5 Ii. cylindr^oea Mx. St. low, slender, and very leafy, smooth and somewhat 

 hirsute, Ivs. rigid, linear, mostly 1-veine^ hds. few, sessile or pedicellate, cylin- 

 drioal, 15 to 20-flowered; scales short, cmate, close, rounded or obtuse, andahritptly 

 mucronate at apex ; pappus plumous. — Prairies and barrens, Mich, to Iowa (Cou- 

 «ens) and Mo. St 6 to 18' high. Lvs. 2 to 5' by 2 to 4". Heads 1' Ions 



