100 COMPOSITE. (composite family.) 



7. SCLEROLEPIS, Cass. 



Heads many-flowered. Scales of the involucre linear, imbricated in two rows, 

 equal. Receptacle naked. Corolla 5-toothed. Aehenia 5-anglcd. Scales of 

 the pappus .">, almost horny, oval. — A smooth aquatic perennial herh, with 

 wl Killed linear leaves, and 1-3 heads of purple flowers, terminating the stem or 

 peduncle-like branches. 



1. S. verticillata, Cass. (Sparganophorus verticillatus, J//Wu\) — 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, Ell.) 



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

 or lanceolate, appressed. Receptacle chaffy. Aehenia 10-ribbed. Pappus of 

 numerous unequal bearded bristles. — Erect perennial herbs. Leaves alternate. 

 Heads corymbed. Flowers purple. 



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

 simple, rigid ; leaves linear, appressed, the lowest crowded, elongated ; corymb 

 Bmall, dense, mostly simple ; pedicels bractcd ; scales of the involucre lance- 

 olate, acute, hairy. — Open grassy pine barrens, "West Florida. September. — 

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



2. C. tomeiltOSUS, Torr. & Gray. Stem simple, tomentose; leaves 

 smooth or hairy, gland-pointed ; the lowest oblong or lanceolate, 3-ribhcd, nar- 

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

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

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

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



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

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

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

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

 broadly margined. (I*, tomentosa, Ell.) — Margins of swamps, Florida to 

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



4. C. bellidifoliu8, Torr. & Gray. Smooth ; leaves spatulatc-lanecolate, 

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

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

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

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



9. LIATRIS, Schreb. Buttok-Shakkboot. 



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

 the Involucre imbricated. Receptacle naked. Corolla 5 lobed. Aehenia nearly 

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

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



