Baccharis. COMPOSITiE. 221 



linear, mostly entire, narrowed downward ; lowest broader, incisely toothed or laciniate • 

 involucre ciuereous-puhescent : ligules very small, siiorter than tiie style and tiie at lent;:th 

 ferruginous pappus. — Spec. iii. 1955 ; Benth. Fl. Austr. iii. 495. E. amhiguus, Schultz Bip. 

 in Phyt. Cauar. ii. 208. E. Bonariensis, DC. Prodr. v. 289, in part. Conyza amhiqtia, Y)0. 

 PI. Pranc. & Prodr. 1. c. C. sinuata, EU. Sk. ii. 323. — Waste grounds, coast of S. Carolina 

 to Florida, (liitr. from tropics.) 



•J— -1— Indigenous weeds ; but the common ."jpecies now cosmopolitan : heads only 2 lines high : 

 involucre almost glabrous: leaves commonly more or less hispid-ciliate. 



E. Canadensis, L. From sparsely hispid to almost glabrous : stem strict, I to 4 feet high, 

 with numerous narrowly paniculate heads, or in depauperate plants only a few inches hi^h 

 and with few scattered lieads : leaves linear, entire, or the lowest spatulate and incised or 

 few-toothed : rays wliite, usually a little exserted and surpassing tlie style-ljranclies. — Spec. 

 ii. 863; PL Dan. t. 292; Torr. & Gray, 11. ii. 167. E. paniculatus. Lam. PI. Franc. E.jm- 

 siUiis, Nutt. Gen. ii. 148, a depauperate form. E. sirirtum, DC. Prodr. v. 289, a strict and 

 setose-hispid form. Senecio ciliatus, Walt. Car. 208. — Open or waste grounds, througliout 

 temperate N. America, especially the warmer parts. (Nat. in Pu., &c.) 



E. divaricatus, Micnx. Low (a span to a foot higli), diffusely much branched, somewhat 

 fastigiate : leaves all narrowly linear or subulate, entire : rays purplish, rarely surpassing 

 the style-branches or tiie pappus. — PI. ii. 123; Nutt. 1. c. ; Torr. &. Gray, 1. c. — Open 

 grounds and river banks, Indiana to Minnesota, Nebraslca, and Texas. 



50. CONYZA (Tourn., L. in part), Less. (Name used by Dioscorides and 

 Pliny for some kind of Fleahane, supposed to come from Kmmxj/, a flea.) — Her- 

 baceous or some shrubby, of various habit ; wliat were the original species belono- 

 to Imda, i&c, those now referred to it are of warm regions, and approach the 

 Ccenotus section of Erigeron. — Benth. & Hook. Gen. ii. 283. 



C. Coulteri, Gray. x\pparently annual, a foot or two high, commonly branched, bearing 

 numerous small heads in a mostly crowded tliyrsoid leafy panicle, viscidly pubescent or 

 partly hirsute with many-jointed hairs : cauline leaves linear-oblong, the lower spatulate- 

 oblong and with partly clasping base, from dentate to laciniate-pinnatifid (an inch or two 

 long) : involucre 1 or 2 lines high, hirsute with rather soft spreading hairs, consideral)ly 

 shorter than the soft pappus : flowers whitish ; the numerous female witli an entire corolla- 

 tube barely half the length of the style; hermaphrodite flowers only 5 to 7. — Proc. Am. 

 Acad. vii. "355, & Bot. Calif, i. 332. ' C. sitbdecurrens, Gray, PI. Pendl. 78, & PI. Wright. 

 i. 102, not of DC. Erigeron discoideus, Kellogg, Proc. Calif. Acad. v. 55. E. subdecurrcns. 

 Gray, Bot. Mex. Bound. 78. — River-bottoms, &c., W. Texas and Colorado to Arizona and 

 California. Much resembling C. suhderurrcns, DC, which, from the more developed condla 

 of the ray, is referred to Erir/cron, hut has also a diffei-ent pubescence. (Adj. Mex.) 



Var. tenuisecta. Greener, extremely leafy : leaves pinnately or even somewliat 

 bipinnately parted into linear lobes : heads smaller and very numerous in an ample panicle. 

 — S. Arizona, near Port Huachuca, Lemmon. Api)arently growing with the ordinary form. 



51 . BACCHARIS, L. (Named after Bacchus, unmeaningly.) — Shrubs, 

 undershrubs, or some perennial herbs ; with alternate simple leaves, sometimes 

 reduced to scales, and the branches commonly striate or sulcate-angled, bearing 

 small heads of white or whitish or yellowish flowers. A huge American genus, 

 chiefly tropical and S. American. — Benth. & Hook. Gen. ii. 286; Gray, Proc. 

 Am. Acad. xvii. 212. 



§ 1. Pappus of the fertile flowers very copious and pluriserial, elongated in 

 fruiting, soft: akenes 5-10-costate: stems herbaceous from a lignescent or more 

 woody base: leaves linear, 1 -nerved : recci:)tacle flat and broad, naked. Here 

 also B. Jtincea, of S. Brazil (Arrhenachne, Cass., Stephananthus, Lehm.), and 

 B. Seemanni, of Mexico. — Grav, Proc. Am. Acad. xvii. 211. 



