Gaillardia. COMPOSITE. 351 



1. c. ; Torr. & Gray, 1. c, with var. pinnatijida. L. pinnatifida, Schweinitz ; Nutt. Trans. 

 Am. Phil. Soc. 1. c. — Pine barren swamps, N. Carolina to Florida. 

 H. brevifolium, Gray, 1. c. More glabrous : leaves shorter and entire or nearly so, lower 

 and radical spatulate : head smaller, with brownish or purplish disk : akenes pubescent : 

 paleffi of the pappus nearly entire. — Leptopoda hrcvifolia, Nutt. Trans. Am. Phil. Soc. 1. c. ; 

 Torr. & Gray, 1. c, excl. var. — Pine barren swamps, N. Carolina to Alabama. 



159. AMBLYOLEPIS, DC. (Composed of aix/3Xv<;, blunt, and AcTrt'?, 

 scale; from the pappus.) — Prodr. v. GG7. — Single species, exhaling the odor 

 of Melilot in drying : fl, all summer. 



A. setigera, DC. 1. c. Annual, a foot or so high, sometimes glabrous and vei-y smooth, 

 sometimes villous with very long hairs rising from minute papilla>, especially along the 

 margins of the leaves : stem loosely branching below, terminated by long monocephalous 

 peduncles : leaves membranaceous, bright green, entire ; radical obloug-spatulate with long 

 tapering base ; cauline oblong or ovate, with rounded or subcordate haK-clasping base and 

 mucronate-acumiuate tip: head large: flowers all golden yellow: rays almost inch long, 

 3_4.1oljed : paleaj of the pappus 5, about half the length of the akene, broadly ovate, silvery- 

 scarious, entire and nerveless, very obtuse, or in some outer flowers short-acuminate. — Gray, 

 PI. Wright, i. 121. — Prairies of Texas; first coll. by Berlandier. (Adj. Mex., Palmer.) 



160. GAILLARDIA, Fougeroux. (M. Gaillard de Merentonneau.) — 

 N. American herbs (and one extra-trop. S. Amer.), chiefly of the Atlantic side ; 

 with alternate sometimes resinous-atomiferous and impressed-punctate leaves, and 

 ample and showy Scabious-like heads on terminal or sometimes scapiform pedun- 

 cles ; the flowers often fragrant, yellow or reddish-purple; in summer. — Mem. 

 Acad. Sci. Par. 1786, 5, t. 1, 2; DC. Prodr. v. 651 ; J. Gay in Ann. Sci. Nat. 

 ser. 2, xii. 56. Galardia, Lam. Diet. ii. (178G), 590, & 111. t. 708 ; Michx. Fl. ii. 

 142; Nutt. Gen. ii. 175. Ccdonea, Buchoz, Ic. (1786), t. 126, ex DC. Vir- 

 gilia, L'Her. & Smith, not Lam. Guntheria, Spreng. Syst. iii. 356. 



§ 1. Style-branches tipped with short (in ours naked) appendage of only once 

 to thrice the length of the peniciilate tuft : lobes of disk-corolla short and obtuse : 

 rays sometimes fertile, often none : akenes villous all over : winter annuals or at 

 most biennials. • — Guntheria, Spreng. Syst. iii. 356, 449, and Gercostylis, Less. 

 Syn. 239; an extra-tropical S. American species. Agassizia, Gray & Engelm. 

 Proc. Am. Acad. i. 50, & Jour. Bot. Nat. Hist. vi. 229. 



G. COMOSA, Gray, Proc. Am. Acad, xviii. 109, xix. 34, of Coahuila, Mexico, is a third spe- 

 cies of this section : it has truly fertile rays, exceedingly long hairs to the akene which nearly 

 cover the short-awued pappus and at length almost equal the disk-corolla, and very short soft 

 fimbrilla; to the receptacle; the head on a naked scape. 



G. simplex, Scheele. Leaves all in a radical cluster or a few near the base of the simple 

 (foot or two long) monocephalous scape, commonly spatulate, from pinnatifid to coarsely 

 dentate or some entire : head globose in fruit : involucre of about 2 series of short and 

 narrow bracts : flowers heliotrope-scented : rays none or imperfect and irregular and stylifer- 

 ous, or but few fully developed and neutral : villous hairs of the akene little surpassing the 

 base of the large paleae of the pappus, these 6 to 11, their slender awns at length surpassing 

 disk-corolla. — Scheele in Linn. xxii. 160. G. tnherculntxi , Scheele, 1. c. 349, is apparently tlic 

 subcaulescent and more radiate form. Arjosaizla suavis, Gray & Engelm. 1. c. — ]\ocky 

 prairies of Texas ; first coll. by Lindhelmer and Wright. 



§ 2. Style-branches tipped with a long hispid or hispidulous filiform append- 

 age : rays neutral, in first species sometimes wanting. — Gaillardia, Foug., 

 DC, &c. 



