Hdianthus. COMPOSITjE. 273 



CaUf. i. 353. — California, from San Francisco Bay nortliward, Sinds (who got it at Bo- 

 degas), Urnhjes, Bulancler, Mrs. Ames. 

 H. exilis, <;nAT. a foot or so liigh, slender, commonlj- hirsute: leaves lanceolate and 

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

 nearly full ^ize of tho^e of the preceding: cusp of tlie chaff a slender aAvn, surpassing the 

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

 part of California. (The specimen from (J^ven's Valley, Van Horn, is proballv a depau- 

 perate //. petiokiris.) 



* * # Stems branched from the base, diffuse or decumbentj slender. 

 - H. debilis, Xutt. Scabrous to hispidulous or hispid: stems afoot to a yard long: leaves 

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

 long, repand-denticulate to sparingly lobulate-dentate, 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-subulate : rays 

 half-inch or more long. — Trans. Am. Phil. Soc. vii. .307 ; Torr. & Gray, 1. c. 320; the coast 

 form. //. pracox, Eui^fdm. & Gray, PI. Lindh. i. 13, form with more hispid stem.— Sandy 

 shores of Florida, AV- Louisiana, and E. Te.xas. 



Var. CUCUmerifoiius. 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. — H. cucumenfolius, Torr. & 

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

 woods, Texas, common westward. 



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

 leaves almost always opposite. 



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

 narrower mostlj- attenuate-acuminate and almost equal bracts: disk (upper 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 (S to 16 inches long, commonly 2 to 4 lines wide), 

 or the lowest lanceolate, to almost filiform, slightly papillose-scabrous, the low-er narrowed 

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

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

 PI. Ear. Genev. 12, & Prodr. v. 5SG, excl. syn. ; Torr. & Gray, Fl. ii. 320. H. giyanteus, var. 

 ainltns, jS'utt. Gen. ii. 177? — Dry jdains, Nebraska to Arkansas and Texas, we.^t to S. E. 

 Colorado. 



5- H. angustifolius, L. Scabrous, sometimes hispidulous : stems 2 to 6 feet high, rather 

 sparsely leafy, slender : leaves thickish, entire, when dry with revolute margins : cauline 

 sessile (the upper liardly narrowed at base), 3 to 7 inches long, mostly 2 or 3 lines wide, 

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

 wliat s]iatulate or lanceolate : bracts of the involucre lanceolate and acute or attenuate- 

 acuminate : rays numerous, inclv long : disk generally dark-purple : receptacular bracts 

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

 "Walt. Car. 216 ; :\liclix. Fl. ii. ui ; Bot. Mag. t. 2051 ; Bart. Fl. Am. Sept. t. 105 ; Torr. & 

 Gray, Fl. ii. 320. Coreopsis angustifolia, L. 1. c. 908; ^Mill. Ic. t. 224, f. 2; and RuJbeckia 

 anqiiftifoUa, L. Spec. ed. 2, 1281. Leighia bicolor, Cass. Diet, xxv, 436. — AVet ground, pine 

 barrens of New .Terser and Kentucky to Florida and Texas. 



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

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

 not tomentose nor con'^picuously cinereous : Atlantic United States species, one of them reach- 

 ing the llocky Mountains. 



•i— Stems glabrous and verj' smooth or merely scabrous, leafy: leaves narrowly to broadly lanceo- 

 late : chaff of receptacle entire, merely mucronate. 

 "H. Ploridanus, Gray. Stem from 2 to 6 feet high: leaves thinnish, bright green above, 



sparsely hispidulous-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 



