278 COMPOSITiE. Helianihus. 



++ -H- -w- Imperfectly tnown Pacific species, probably perennial, with foliaceoas involucre. 

 H. Dougfldsii, ToKK. & Gray. Stems brandling, ascending, hispidulous : leaves alternate; 

 upper rhomboid-oblong to spatulate-lanceolate, taperiag into Avinged petioles, obtuse, entire, 

 inch or two long : head half-inch high : bracts of the 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 " H. Valifurnicus." 

 •1— -I— ^— -t— Leaves all or most of them opposite, at least the cauline, or in B. tuberosus, &c., 



the upper alternate, all triplinerved or 3-nerved : Atlantic species. 

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



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



puberuient or canescent-tomentulose beneath. 



' H. parviflorus, Beknh. Stem smooth and glabrous, 3 to 6 feet high : leaves thin, nearly 

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

 base into a half-inch 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 

 ba.se), pale and when young tomentulose or puberuient beneath; bracts of the campauulate 

 involucre subulate-lanceolate, shorter than the comparatively few-flowered 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 HBK. Xov. Gen. & Spec, 

 1820 [H. micranthus, Spreng.), which perhaps is not of the genus. Ji. divaricatus, Michx. 

 Fl. ii. 141 ; Ell. Sk. ii. 428, not L. H. strumosus, \a,T. pcdlidus. Ell. 1. c, ex Torr. & Gray. 

 H. tracIieliifoUus, Hook. Comp. Bot. Mag. i. 98. H. microcephalus, Torr. & Gray, El. ii. 229. 



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

 Louisiana. 



Var. attenuatus. Leaves narrowly lanceolate, 5 inches long, at most half-inch wide, 

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

 Falls, Georgia, .7. Donndl Smith. 



H. Sch'weinitzii, Toek. & Geat. Stem hispidulous or minutely strigose-pnbescent, 2 to 

 5 feet high ; leaves of thicker texture, shagreen-scabrous above, canescently 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 lone. 



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



++ ++ Heads small, half-inch or less high, few or scattered, slender-peduncled : rays 6 to 10: 

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

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

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

 a little hairy at the summit: usually but not always one or two conspicuous acute squamellaj 

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

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

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

 (3 to 8 inches long, quarter to half inch wide), thicldsh, mo,stly entire, sessile loNNpst cauline 

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

 chaff of the receptacle glabrous, commonly 3-toothed, narrow: proper palea; of the pappus 

 2 or 3, the squamelte thin and small. —El. ii. 571 ; Ell. Sk. ii. 417 ; Torr & GraN- El ii 4.31 

 Lejghia iongifolia, Nutt. Trans. Am. Phil. Soc. vii. 365.- W. Georgia, in wet soil, Liion, &c. 

 Little known ; no sufficient specimens seen. 

 H. Iseyigatus, Tore. & Gray. No creeping rootstocks and no fleshy-thickened nxits : stem 

 2 too feet high, glaucous: le:ives lancoulate, very acute, subsossile, thickish, pale beneath, 

 sparsely sr-rrulate or the upper eutire : rays 6 to S, broad, usmillv inch long, bright vellow : 

 chaft of the receptacle entire, more or less pubes.'ent on the "back: .suuamella) or inter- 

 mediate pale.-c of the papjuis rather large and firm, half or a quarter the length of tlie lan- 

 ceolate or ovate proper j.alese, sometimes'w:«iting. — Fl. ii, 330; (^.rav JI:in 0,56— Alle- 

 ghany Mountains in Virginia and N. Carnliua. Ocurs in tw„ forms;' one .slender, simple, 

 2 or ,3 ieet high, with narrow loaves 3 to 5 inches long, iKilf-incIi or less broad (this possibly 

 maybe 11. l„„f,,joln,,): 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 raNs over an inch 



