190 COMPOSITA. (COMPOSITE FAMILY.) 
7. SCLEROLEPIS, Cass. 
Heads many-flowered. Scales of the involucre linear, imbricated in two rows, 
equal. Receptacle naked. Corolla 5-toothed. Achenia 5-angled. Scales of 
the pappus 5, almost horny, oval.— A smooth aquatic perennial herb, with 
whorled linear leaves, and 1—3 heads of purple flowers, terminating the stem or 
peduncle-like branches. 
1. S. verticillata, Cass. (Sparganophorus verticillatus, Michx.) — Shal- 
low ponds, Florida to Mississippi, and northward. July. — Stems B 
1° high. Leaves 5-6 in a whorl. Heads }! wide. 
8. CARPHEPHORUS, Cass. (Lrarnis, Ell.) 
Heads many-flowered. Scales of the involucre imbricated in 3 — 5 rows, ovate 
or lanceolate, appressed. Receptacle chaffy. Achenia 10-ribbed. Pappus of s 
numerous unequal bearded bristles. — Erect perennial herbs. Leaves alternate. 
Heads corymbed. Flowers purple. oe 
1. C. Pseudo-Liatris, Cass. Pubescent and somewhat hoary; stem 
simple, rigid ; leaves linear, appressed, the lowest crowded, elongated ; corymb — 4 
small, dense, mostly simple; pedicels bracted; scales of the involucre lance- 
olate, acute, hairy. — Open grassy pine barrens, West Florida. September. — 
Stem 6/-18/ high. Heads rarely racemose. : 
2. C. tomentosus, Torr. & Gray. Stem simple, tomentose; leave 
smooth or hairy, gland-pointed; 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 tomentose, the outer 
ones short, ovate, the inner oblong, acute. (L. Walteri, EU.) — Low pine i 
rens, North and South Carolina. September. — Stem 2° high. 
3. C. corymbosus, Torr. & Gray. Stem tall, hairy; leaves smooth of 
more or less hairy; the lowest cuneate-lanceolate, obtuse, 1- or obscurely * 
ribbed; the others numerous, small, oblong, sessile; heads about 20, closely 
corymbed ; scales of the involucre nearly smooth aud equal, oval, very obtuse, 
broadly margined. (L. tomentosa, Ell.) — Margins of swamps, Florida to 
North Carolina. September. — Stem 29 — 4° high. : 
4. C. bellidifolius, Torr. & Gray. Smooth; leaves ae 
3-ribbed, obtuse; heads few in a loose corymb; scales of the involucre oblong, 
obtuse, sparingly fringed on the margins; pappus slightly plumose.— D'Y 
sand-hills, Wilmington, North Carolina. September. — Stems several from 
the same root, 12'—18' high. Heads sometimes panicled. i 
9. LIATRIS, Schreb Burrow-SNAKEROOT. : 
w- or many-flowered, the flowers all similar and patti: E 
ei Receptacle naked. Corolla5lobed. Achenia! i 
e base, an Riker nk D 
