li'O coMi'o.><iT,i;. (comtositp: family.) 



7. SCLEROLEPIS, Cass. 



IToads riinny-flowcro(l. Scales of tlii' involucre linear, iniliricated in two rows, 

 rqual. Reeej)taelc naked. Corolla S-toothcd. Aclienia 5-anj,fled. Scales of 

 the pappu-i 5, almost horny, oval. — A smooth aquatic perennial herb, with 

 whorled linear leaves, and 1 -3 heads of pui-plc flowers, terminating the stem or 

 pcdunelc-likc branches. 



1. S. verticillata, Cass. (Sparganophoms vcrticillatus, ,V/<7(.r.) — Shal- 

 low ponds, Florida to Mississippi, and northward. July. — Stems ascending, 

 1° high. Leaves 5-6 in a whorl. Heads ^' wide. 



8. CARPHEPHORUS, Cass. (Liatris, £//.) 



Heads many-flowered. Scales of the involucre imbricated in 3 -.5 rows, ovate 

 or lanceolate, appressed. Receptacle chafty. Aclienia lO-ribbed. Pappus of 

 numerous unequal bearded bristles. — Ereet perennial herbs. Leaves alteniale. 

 Heads eorymbed. Flowers j)uri)lc. 



1. C. Pseudo-Liatris, Cass. Pubescent and somewhat hoary; stem 

 simple, rigid ; leaves linear, appressed, the lowest crowded, elongated ; coi-ymb 

 small, dense, mostly sinqjle ; pedicels bracted ; scales of the involucre lance- 

 olate, acute, hairy. — 0|)en grassy pine barrens, West Florida. September. — 

 Stem 6'- 18' high. Heads rarely racemose. 



2. C. tomentOSUS, Ton-. & Gray. Stem simple, tomentoso; leaves 

 smooth or hairy, ghind-])oiuted ; the lowest oblong or lanceolate, 3-ribbed, nar- 

 rowed into a long clasping petiole, the others numerous, small, oblong or oval, 

 sessile ; corymb loose-flowered ; scales of the involucre very tomentosc, the outer 

 ones short, ovate, the inner oblong, acute. (L. Walteri, Eli) — Low pine bar- 

 rens. North and South Carolina. September. — Stem 2° high. 



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

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

 ribbed; the others numerous, small, oblong, sessile; heads about 20, closely 

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

 broadly margined. (L. tomentosa, EU.) — Margins of swamps, Florida to 

 Korth Carolina. September. — Stem 2° -4° high. 



4. C. bellidifolius, Ton-. & Gray. Smooth ; leaves spatulate-lanceolatc, 

 3-i'ibbed, obtuse ; heads few in a loose corymb ; scales of the involucre oblong, 

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

 sand-hills, "Wilmington, North Carolina. September. — Stems several from 

 the same root, 12'- 18' high. Heads sometimes panicled. 



9. LIATRIS, Schreb. Bl-ttox-Sk.\keroot. 



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

 the involucre imbricated. Receptacle naked. Corolla 5-Iobed. Achenia nearly 

 terete, narrowed at the base, about 10-ribbed. Pappus of numerous plumose or 

 bearded bristles. — Perennial herbs (rarely shrubby), with mostly tuberous roots 



