I'JO COMrOSIT.E. (COMI'OSITE FAMILY.) 



7. SCLEROLEPIS, Cass. 



TTcads mnny-flowcird. Scales of the involucrc linear, imbricated in two rows, 

 equal. Receptacle naked. Corolla 5-toothcd. Achenia 5-anglcd. Scales of 

 the pappu'i 5, alino^Jt liorny, oval. — A smooth aquatic perennial herb, \v\t\\ 

 wliorled linear leaves, and 1 3 heads of purple flowers, terminating the stem or 

 pL'dunele-likc branches. 



1. S. vertieillata, Cass. (Sparganophorus vcnicillatus, .V/(7(.r.) — Shal- 

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

 1° high. Leaves 5-6 in a wliorl. Heads i' wide. 



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



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

 or lanceolate, apprcssed. Receptacle chaffy'. Achenia lO-ribbcd. Pappus of 

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

 Heads corymbed. Flowers puqjle. 



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

 simple, rij:i(l ; leaves linear, appresscd, the lowest crowded, elongated ; corymb 

 small, dense, mostly simple ; pedicels bracted ; scales of the involucrc lance- 

 olate, acute, hairy. — Open grass}' pine barrens, West Florida. September. — 

 Stem C- 18' high. Heads rarely racemose. 



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

 smooth or hairy, gl;uid-])ointcd ; 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 involucrc very tomcnto.-^e, the outer 

 ones short, ovate, the inner oblong, acute. (L. Walteri, I?ll. ) — Low j)ine 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 cnneatc-lanceolate, olituse, 1- or obscurely 3- 

 ribbod ; the others numerous, small, oblong, sessile ; licads about 20, closely 

 corymbed ; scales of the involucrc nearly smooth and cipial, oval, very obtuse, 

 broadly margined. (L. tomentosa, Ell.) — Margins of swami)S, F^lorida to 

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



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

 3-ribbe(l, olttu<e ; heails few in a loose corymb ; scales of the involucre oblong, 

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

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

 the same root, lli'- 18' high. Heads sometimes jianiiled. 



9. LIATRIS, Schreb. Bt.TTON-SxAKF.nooT. 



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

 the involucre irnbricutcd. Receptacle naked. Corolla ."i-lobcd. Achenia nearly 

 terete, narrowed iii the base, about 10-ribbed. Pappus of numerous ])lumo.se or 

 bemdtd bristles. — Perennial herbs (ranly shrubby), with mostly tuberous roots 



