278 COMPOSITE. Eelianthus. 



.j.^ ++ ++ Imperfectly known Pacific species, probably perennial, with foliaceous involucre. 

 H. Douglasii, Tour. & Gray. Stems brauching, asceudiug, hispidulous : leaves alternate; 

 upper rlioml)oid-oblong to spatulate-lauceolate, taperiug into winged petioles, obtuse, entire, 

 iuch or two long : head lialf-inch high : bracts of tlio involucre almost all foliaceous, hispidu- 

 lous; outer narrowly oblong, mostly obtuse, reflexed. or spreading, longer than the disk, 

 innermost shorter, erect, acute or somewhat acuminate : rays barely half-inch long : chaff of 

 receptacle entire. — Fl. ii. 332. — California, Douglas (mentioned in Bot. Beech. 253); near 

 Santa Clara, Sinclair, in Bot. Sulph. as " //. Califoniicus." 

 ^_ ^_ H_ H— Leaves all or most of tlieui opposite, at least the cauline, or in II. tuberosus, &c., 



the upper alternate, all tripliuerved or 3-uerved : Atlantic species. 

 ++ Heads remarkably small, only 4 or 5 lines hii>h and rather narrow, loosely paniculate : rays 



onlv .5 to 8, seldom inch long : stem and spreading branches slender : leaves scabrous above, 



puberulent or canascent-tomentulosc beneath. 

 H. parviflorus, Bernii. Stem smooth and glabrous, 3 to 6 feet liigh : leaves thin, nearly 

 membranaceous, ovate-lanceolate or narrower, cuneately or almost tnmcately contracted at 

 base into a half-incii or inch long partly margined petiole, gradually attenuate-acuminate, 

 serrulate, sometimes more serrate (4 to 7 inches long, the larger inch or two wide near the 

 base), pale and when young tomeutulose or puberulent beneath; bracts of the campauulate 

 involucre subulate-lanceolate, shorter than the comjiaratively few-flowerefl disk, the tips 

 loose or squarrose : rays 5 or 6, commonly half-inch but sometimes nearly inch long. — 

 Spreng. Syst. iii. 617 (1826, & probably somewhat earlier), not of IIBK. Nov. Gen. & Spec, 

 1820 (H. micranthns, Spreng.), which perhaps is not of the genus. H. divaricatus, Miehx. 

 Fl. ii. 141 ; Ell. Sk. ii. 428, not L. H. strumosns, var. pallidus, Ell. 1. c, ex Torr. & Gray. 

 H. tracheliifolius, Hook. Comp. Bot. Mag. i. 98. //. microcephalus. Ton. & Gray, Fl. ii. 229. 



— Moist woods and along streams, Pennsylvania to Illinois, Upper Georgia, Arkansas, and 

 Louisiana. 



Var. attenuatus. Leaves narrowly lanceolate, ."> inches long, at most half-inch wide, 

 very scabrous above, tlicrefore connecting with the following. — Dry woods, near Tallulah 

 Falls, Georgia, ./. Donnell Smith. 

 TT . Scliweinitzii, Torr. & Gray. Stem hispidnlons or minutely strigoso-pubescent, 2 to 

 5 feet high : leaves of thicker texture, shagreen-scabrous above, canesceutly tomentulose 

 beneath, lanceolate (the larger 4 to 7 inches long, inch or less wide) and with more tapering 

 less petioled base, serrulate or nearly entire : involucre hirsute : rays 6 to 8, half-inch long. 



— Fl. ii. 330; Chapm. Fl. 231. — Dry ground, W. North Carolina to Middle Georgia. 



•H- ++ Heads small, half-inch or less high, few or scattered, slender-peduncled : raj's 6 to 10: 

 whole plant glabrous and smooth! except perhaps the edges of tlie leaves and involucral bracts: 

 involucre campanulate, of thickish smooth bracts; the outer lanceolate with gradually attenuate- 

 subulate spreading tips; inner ovate-lanceolate or broader, somewhat acuminate, erect: akencs 

 a little hairy at the sununit: usually but not alwa^'s one or two conspicuous acute squamelLc 

 or short palca; on each side between the lanceolate or ovate principal palea; of tho pappus, some- 

 times united with their base (like stipules), caducous \nth them. 



H. longif olius, Pursh. Stem 3 to 7 feet liigh, simple : leaves elongated linear-lanceolate 

 (3 to 8 inches long, quarter to half inch wide), thicld.sh, mostly entire, sessile, lowest cauline 

 and radical tapering into slender margined petioles: r.ays about 10, narrow, half-inch long: 

 cliaff of tlie receptacle glabrous, commonly 3-toothed, narrow: proper palete of the pappus 

 2 or 3, the squamelltc thin and small. — Fl. ii. 571 ; Ell. Sk. ii. 417 ; Torr. & Gray, Fl. ii. 431. 

 Leighia longifoliu, Nutt. Trans. Am. Phil. Soc. vii. 365. — W. Georgia, in wet soil, Lijon, &c. 

 Little known ; no sufKcient specimens seen. 



H. Isevigatus, Toru. & Gray. No creeping rootstocks and no fleshy-thickened roots : stem 

 2 to 5 feet high, glaucous : leaves lanceolate, very acute, subscssile, thickish, pale beneath, 

 sparsely serrulate or the upper entire : rays 6 to 8, broad, usually inch long, bright yellow : 

 chaff of the receptacle entire, more or less pubescent on the back: squamellai or inter- 

 mediate palea3 of the pappus rather large and firm, half or a quarter the length of the lan- 

 ceolate or ovate proper palete, sometimes wanting. — Fl. ii. 330; Gray, Man. 256. — Alle- 

 ghany Mountains in Virginia and N. Carolina. Occurs in two forms ; one slender, simple, 

 2 or 3 feet high, with narrow leaves 3 to 5 inches long, half-inch or less broad (this possibly 

 may be H. iongifolius) : the other larger, 4 to 6 feet high, branching, with ampler leaves, 

 the larger cauline ovate- or oblong-lanceolate and 2 or 3 inches wide, and rays over an iuch 



