352 COMPOSITE. Gaillardia. 



# More or less pubescent or hirsute with many-jointed hairs, leafy-stemmed : leaves not coriaceous : 

 bracts of the involucre ^at least the outer and larger) mainly foliaceous and spreading, la, ceo- 

 late or narrower: disk-flowers apt to turn brown or dark-purple: villous hairs covering the 

 akene mainly at. its base or below the broad summit: palese of the pappus slender-awned. 



-t FimbrilUe of the receptacle obsolete or reduced to very short soft teeth : corolla-lobes caudately 

 acuminate from a short bvoadish base. 



G. lanceolata, MICHX. Minutely or somewhat cinereously pubescent, not hirsute, about 

 2 feet high from an annual or perhaps perennial root, virgately branched : leaves rather 

 small, from spatulate-lanceolate to linear, entire or slightly or sparsely serrate : outer bracts 

 of the involucre lax and herbaceous to the base : rays rather few and sparse, half or two- 

 thirds inch long, 3-cleft into narrow lobes and with slender tapering base, sometimes obsolete 

 or wanting : flowers sweet-scented : the disk commonly dark and the rays yellow or copper- 

 colored with dark veins. Fl. ii. 142; Gray, 1. c. ; Torr. & Gray, Fl. ii. 365, not DC. 

 G alar dia bico/ur, Pursh, Fl. ii. 572 (excl. syn. and it cannot be Leysera Caroliniana, Walt.) ; 

 Nutt. 1. c. ; Ell. Sk. ii. 449. Poh/ptcris interji-ifolia, DC. Prodr. v. 659, excl. syu. Dry pine 

 barrens, S. Carolina to Florida, Kansas, and Texas. 



i -) Fimbrillae of the receptacle setiform or subulate-aristiform, mostly surpassing the akenes. 



H- Lobes or teeth of disk -corolla subulate-acute and usually tipped with a seta or cusp, externally 

 beset with long and beaded hairs : rays usually numerous and when well developed contiguous 

 or overlapping, short-cuneate at base: pappus aristate even iu the ray-flowers: bracts of invo- 

 lucre callous at base, more or less hirsute, as also the herbage. 



G. aristata, PURSH. Perennial ; often 2 feet or more high : leaves of firm texture, lanceo- 

 late or broader, or lower spatulate, from entire to laciniate-dentate or siuuate-piunatifid : 

 rays all yellow, iu the largest heads inch and a half loug : setiform fimbrillae sometimes little 

 shorter than disk-corollas. Fl. ii. 573; Liudl. Bot. Reg. t. 1186; Hook. Bot. Mag. t. 2940, 

 & Fl. i. 315 ; DC. Prodr. v. 652 ; Gay, 1. c. ; Torr. & Gray, 1. c. G. bicolor, Hook. Fl. 1. c., 

 excl. syn. G. bico/or, var. aristata, Nutt. Gen. ii. 175; Hook. Bot. Mag. sub t. 3368. 

 G. 7-ustica, Cass. Diet, xviii. 20; Desf. Cat. G. lanceolata, DC. 1. c., excl. syn. Plains, 

 Saskatchewan to Brit. Columbia and Oregon, south to S. Colorado, New Mexico, and even 

 the borders of California '? 



G. pulchella, Fouo. 1. c. Annual, a foot or less high, diffusely branched at base : leaves 

 softer, from entire to pinnatifid : rays two-colored, lower part red-purple or darker, the upper 

 or teeth yellow, at most inch long : lobes of disk-corolla more attenuate : fimbrillae rather 

 stouter, hardly surpassing the mature akenes. Cass. Diet, xviii. 19; DC. 1. c. ; Gay, 1. c. ; 

 Torr. & Gray, 1. c. G. bicolor, Lam. Diet. ii. 590, & 111. t. 708; Sims, Bot. Mag. t. 1602 (as 

 to figure) ; Hook. Bot. Mag. t. 3551 (var. Drummondii, integerrima). G. Drummondii, DC. 

 Prodr. v. 652. Virgilia helioidas, L'Her. ; Smith. Exot. Bot. i. t. 37. Plains, Louisiana, 

 Arkansas, and Texas to Arizona. (Adj. Mex.) 



Var. picta. Form with somewhat succulent leaves, when growing near the sea-shore : 

 nmbrillae of the receptacle shorter and stouter, more or less subulate. G. bicolor, var. Drum- 

 mondii, Hook. Bot. Mag. t. 3368. G. picta, Don, Brit. Fl. Gard. ser. 2, t. 267 ; Gay, 1. c. 

 Texas, in low grounds. Common in gardens. 



w- -M- Teeth of the disk-corolla short and broad, obtuse, pointless or obscurely apiculate : invo- 

 lucre more or less callous at base. 



= Akenes destitute of villous hairs (glabrous or glabrate) at the upper part, and not overtopped 

 by the basal villi : nmbrill* of the receptacle setiform, equalling or surpassing the akeues : leaves 

 undivided. 



G. amblyodon, GAY. Annual, a foot or two high, leafy to the top, mostly hirsute : leaves 

 oblong or the lower spatulate, all sessile by an auriculate base, denticulate or the upper 

 entire: bracts of the involucre hirsute-ciliate, outer with conspicuous erect callous base; 

 rays numerous and contiguous, oblong-cuneate, throughout brownish red or maroon-color, an 

 inch or less long: ray-pappus awuless. Ann. Sci. Nat. I.e.; Torr. & Gray, Fl. ii. 367 ; 

 Gray, Chloris Am. Bor. (Mem. Am. Acad. iii.) 32, t. 4; Meehan, Nat. Fl. ii. t. 46. Sandy 

 prairies of Texas; first coll. by Druinmond. 



G. Mexicana, GRAY. A foot or less high from a perennial root, with the habit of G. lan- 

 ceolata, minutely pubescent, naked above, with long rather rigid peduncles : leaves lanceolate, 

 rather small, entire, or ths lowest cauliue and radical sparingly dentate or laciuiate : head 



