Helicmthus. COMPOSITiE. 273 



Calif, i. 353. — California, from San Francisco Bay nortlnvard, Hinds (who got it at Bo- 

 degas), Bridges, Bulander, Mrs. Ames. 

 H. exilis, Cray. A foot or so high, slender, commonly hirsute: leaves lanceolate and 

 ovate-lauceulate, sparingly denticulate, tapering into a slender petiole : heads from half to 

 nearly full size of those of the preceding: cusp of the cliaff a slender awn, surpassing the 

 disk-tlowers. — Proc. Am. Acad. vi. 545, & Bot. Calif. 1 c. — Plains throughout the northern 

 part of California. (The specimen from Owen's Valley, Van Uorn, is probably a depau- 

 perate //. peiiolaris.) 



* * * Stems branched from the base, diffuse or decumbent, .'ilender. 

 H. debilis, Nutt. Scabrous to hispidulous or hi.spid : stems a foot to a yard long : leaves 

 from ovate to deltoid or obscurely hastate, occasionally subcordate, thinnish, 1 to 3 inches 

 long, repand-denticulate to sparingly lobulatc-deutate, slender-petioled : bracts of the invo- 

 lucre lanceolate and gradually subulate-acuminate : disk half-inch or more in diameter; its 

 chaffy bracts with truncate or 3-toothed summit,, the middle tooth aristiform-subulatc : rays 

 half-iucli or more long. — Trans. Am. Phil. Soc. vii. 367 ; Torr. & Gray, 1. c. 320; the coast 

 form. //. prcccox, Engclm. & Gray, PI. Lindh. i. 13, form with more hispid stem. — Sandy 

 shores of Florida, W. Louisiana, and PL Te.xas. 



Var. CUCUmerifolius. A larger form, usually with purple-mottled stems, leaves 

 irregularly serrate with salient teeth, more commonly subcordate, the larger 4 or 5 inches 

 long, and the ampler (15 to 20) rays an inch or more long. — //. curumerifolius, Torr. & 

 Gray, 1. c. 319. H. Lindhciinerianus, Scheele in Linn. xxii. 159? — Sandy soil, often in 

 woods, Texas, common westward. 



§ 2. Perennials : receptacle convex, or in some iit length low-conical : lower 

 leaves almost always opposite. 



* Involucre loose (about half-inch higli), more or less squarrose in age, of subulate-lanceolate or 

 narniwcr mostly attenuate-acuminate and almost equal bracts: disk (ujjpcr part of corollas) 

 commonly but not always dark purple or turning brownish: all but the lower leaves linear or 

 filiform and strictly one-nerved: slender creeping rootstocks, no tubers. 



H. orgyalis, DC Stem smooth and glabrous, often 10 feet high, very leafy to the top: 

 leaves mostly alternate, from long-linear (8 to IG iuches long, commonly 2 to 4 lines wide), 

 or the lowest lanceolate, to almost filiform, slightly jiapillose-scaljrous, the lower narrowed 

 into a petiole and sometimes serrulate: bracts of the involucre filiform-attenuate, those of 

 the receptacle entire: akenes oblong-obovate with a rounded summit, 3 lines long. — Notul. 

 PI. Par. Genev. 12, & Prodr. v. 586, exel. syn. ; Torr. &, Gray, Fl. ii. 320. H. (/i(/anteus, var. 

 crinitns, Nutt. Gen. ii. 177? — Dry plains, Nebraska to Arkansas and Texa.s, west to S. E. 

 Colorado. 



H. angustifolius, L. Scabrou.s, sometimes hisjiidulous : stems 2 to 6 feet high, rather 

 sp.'irsely leafy, slender: leaves thickish, entire, when dry with i-evolute margins: cauline 

 sessile (tiie upper hardly narrowed at base), 3 to 7 inches fong, mostly 2 or 3 lines wide, 

 paler and smooth or sometimes canesceut beneath, many of them opposite ; radical some- 

 what spatulate or lanceolate : bracts of the involucre lanceolate and acute or attenuate- 

 acuminate : rays numerous, inch long: di.sk generally dark-purple: rcceptacular bracts 

 entire or 3-toothed : akenes (barely 2 lines long) with broad truncate apex. — Spec. ii. 906 ; 

 Walt. Car. 216 ; Michx. Fl. ii. ui ; Bot. Mag. t. 2051 ; Bart. Fl. Am. Sept. t. 105 ; Torr. & 

 Gray, Fl. ii. 320. Coreopsis angustifulia, L. 1. c. 908; Mill. Ic. t. 224, f. 2; and lindberlcia 

 anguslijoliet, L. Spec. cd. 2, 1281. Leiyhia hicolor, Cass. Diet. xxv. 436. — Wet ground, pine 

 barrens of New Jersey and Kentucky to Florida and Texas. 



* * Involucre closer, of more imbricated and unequal inappcndicnlatc bracts, none of them folia- 

 ceous: disk mostly dark-colored or dusky: leaves from lanceolate to ovate, rarcl}' linear : herbage 

 not tomentose nor consi)icuously cinereous : Atlantic United States s|)ccies, one of them reaeh- 

 ing tlie liocky Mountains. 



•t— Stems glabrous and very smootli or merely scabrous, leafy: leaves narrowly to broadly lanceo- 

 late: chaff of receptacle entire, merely mucronate. 

 H. Floridanus, Gr.w. Stem from 2 to 6 feet high: leaves thinni.*h, bright green above, 

 spar.sely hispid ulous-scabrous, lanceolate, sparingly or obscurely denticulate, somewhat tripli- 

 nerved near the base, 2 to 4 inches long, 5 to 9 lines wide toward the base, often short-peti- 



18 



