ORDER 70. COMPOSITE. 171 



31. CONYZA, L. GNATBANE. Fls. all tubular, those of the margin $, 

 of the centre $ or . Scales in several rows. Recep. flat or convex. Gyp. 

 compressed. Pap. I row of (red) capil. bristles. Herbs chiefly trop. Fls. yel. 

 C. nmbiff ua DC. Cinereous-pubescent ; lower Ivs. sinuate-lobed, acute, middle re- 



pand-dentate, upper linear, entire ; hds. panicled. Ga. S. Car. Ap.-Jl. (C. siuuata Ell.) 



32. INULA, L. ELECAMPANE. Hds. many-flowered. Invol. imbricate. 

 Ray-fls. numerous, ? ; disk-fls. 5 . Recep. naked. Pap. simple, scabrous. 

 Anthers with 2 bristles at base. U Coarse European herbs, with alternate 

 leaves and very large yellow heads. 



I, Helen! urn L. Lvs. amplexicaul, ovate, rugous, downy beneath ; hds. solitary, ter- 

 minal ; sc. ovate. Pastures and roadsides, N. Eng. to 111. 4-6f. Root Ivs. l-3f. Jl. Aug. % 



33. FLUCHEA, DC. MARSH FLEABANE. Hds. co-flowered ; fls. of 

 the margin $ , of the centre $ , but sterile. Invol. imbricated. Recep. flat, 

 naked. Sty. undivided. Pap. capillary, simple. Strong-scented herbs, with 

 alternate leaves and corymbs of purple fls., and copious, reddish pappus. 



1 P". bifrons DC. Pubescent, leafy ; Ivs. oval-oblong, acute, finely serrate, cordate- 



amplexicaul, veiny ; heads in compound, corymbous clusters, if. Damp, S. 2f. 



2 I", campliorata DC. Lvs. ovate-lanceolate, somewhat pubescent, acute, sessile or 



ehort-petioled, serrate ; fls. in crowded corymbs ; sc. viscid-downy, pointed. (I) Salt 

 marshes, Mass, to Fla. 1 3f. Stout, some fleshy, with upright branches. Aug. Sept. 



3 P. purpnrascens DC. Glandular-toraentous ; Ivs. ovate-lanceolate, serrate, on 

 ^slender petioles ; lids, on slender ped. ; sc. downy, acute. (T) Swamps. l-2f. Fla. Sept. 



4 P. fcetlda DC. Nearly glabrous, very leafy ; Ivs. broadly lanceolate, acute or acu- 



minate at each end, petiolate, obtusely snbscrratc ; heads numerous, in paniculate 

 corymbs ; scales smoothish, acute. 7f Open hills, W. & S. 1 2f. Aug. Oct. 



34. BACCHARIS, L. GROUNDSEL TREE. Hds. discoid, $ 5 . Iiivol. 

 imbricate, cylindiic, or ovate, with subcoriaceous, ovate. scales. $ Sta. 

 rxserted. Recep. naked. Pap. capillary. 5 "With alternate leaves and 

 white flowers in Autumn. 



1 R. lial imilolia L. Whitish-scurfy ; Ivs. obovate, incisely- or repand-dentate above, 



the highest lanceolate; panicle compound, leafy ; fascicles pedunculate, terminal, in 

 a dense panicle. Sea-coast, Conn, to Fla. 6 12f. A handsome shrub. 



2 B. glomeruliflora Pers. Minutely scurfy ; Ivs. all obovate, very obtuse, repand- 



few-toothed ; heads in sessile, axillary glomcrules. Coast, Va. to La. 3 6f. 



3 K. aiigiistiiolia MX. Diffusely branched; Ivs. linear, sessile, entire; hds. small, 



15-20-flowered, cylindrical, axillary, loosely paniculate. Marshes, S. 6 lOf. 



35. PTEROCAULON, Ell. BLACK-ROOT. Hds. many-flowered, the 

 fertile flowers $ , in several rows, the sterile flowers central, mostly $ . Sc. 

 imbricated, caducous with the fruit, ? corollas 3-toothed, $ 5-cleft. Cyp. 

 angular, hispid. Pap. of equal capillary bristles longer than the involucre. 

 it Rhizome tuberous. Leaves alternate, decurrent, and the stem winged. 

 Heads sessile, crowded in a thick woolly spike. 



J*. pyclmostacliyum Ell. Simple; Ivs. lanceolate, smooth above, cream-white- 

 tomentous beneath, as well as one side of the winga of the stem. Sandy soils, S. 2~3f. 

 Spike 23'. May Aug. A curious plant. 



36. BORRICHIA, Adans. SEA OX-EYE. Ray fls. ligulate, $ , fertile 



