270 COMPOSITE. Viguura. 



but at length hispid pubescence, longer and larger than the nearly linear interior ones : rays 

 10 or 12, oval, showy, golden yellow, less tliau an inch long: disk-corollas with dark purple 

 tips : akenes obovate-ohloug, below sparsely aud toward the summit thickly villous with 

 slender hairs : paj)pus uone, or a few very delicate setiform squamelhe shorter than the hairs 

 of the akeue. — Proc. Am. Acad. xix. 4. — S. E. California, at Aqua Calieute, in the Mo- 

 have Desert, Parish. 



102. VIGUIERA, HBK. (Dr. A. Viguier, botanist, of Montpellier.) — 

 Plerbaceous or sometimes suffruticose plants (of the warm parts of America) ; 

 with only the lower or rarely all the leaves opposite, yellow-flowered heads of 

 only medium size (in our species), on peduncles at the summit of the branches, 

 the akenes usually pubescent. — Nov. Gen. & Spec. iv. 224, t. 379; Benth. & 

 Hook. Gen. ii, 375. Viguiera, Leighia (Cass.), & Harpalium (Cass.), in part, 

 DC. Prodr. v. 578-584. 



* Disk of the head at maturity elevated or stronglj^ convex (but at fiis: often low) and the re- 

 ceptacle conical: root probably annual or biennial. 



V. helianthoides, HBK. Minutely hispidulous-pubesceut or scalirous, green, or some- 

 times cinereous : stem 2 to 7 feet high, slender, paniculately branched above : leaves alternate 

 or occasionally either upper or lower opposite, sleuder-petioled, mostly thin, ovate, acuminate, 

 sometimes very broadly ovate (the larger 4 to 6 inches long aud 3 or 4 wide), sometimes 

 ovate-lanceolate, from slightly to coarsely serrate, triplinerved from near the base : heads 

 paniculate, usually slender-peduucled : involucre only 3 Hues iiigh, shorter than the disk, 

 nearly simple, of subulate or linear bracts : rays 7 to 10, obovate or oblong, over hali-incli 

 long : chaffy bracts of the receptacle somewhat cuspidately mucrouate or acuminate : akenes 

 villous-pubescent : palece a pair on each side between the chaffy awns, erose or fimbriolate at 

 the truncate summit. — HBK. 1. c. ; Benth. & Hook. 1. c. V. helianthoides, Sar/rceana, lara, 

 brevipes, and probably V. microcllne, triqueira, also with little doubt V. dentata (Spreng., the 

 Ilelianthus dentutus, Cav. Ic. iii. 10, t. 220), DC. Prodr. v. 579. V. Texana, Torr. & Gray, 

 n. ii. 318. Ilelianthella latifolia, Scheele in Linn. xxii. IGO. — Shady or more open grounds, 

 Texas to Arizona. (Mex., Cuba.) 



V. canescens, DC. Less tall, more rigid, commonly cinereous : leaves coriaceous, entire 

 or nearly so, from broadly ovate to oblong-lanceolate ; the lower opposite : chaff of the 

 receptacle more cuspidate : rays saffron-yellow : akenes canescently sericeous. — Prodr. v. 

 579. — S, Arizona, Pringle, a greener form, and in adjaceut INIexico, Palmer. (Mex.) 



* * Disk tlattish or convex : receptacle at niatm'ity flat or hardly conical. 

 -)— Herbaceous to the base from a probably perennial root, not cauescent nor tonientope. 

 V. COrdifolia, Gray. Hispid or hispidulous and scabrous : stem rather stout, 2 or 3 feet 

 liigli, leafy to the top, commonly branched above : leaves mostly all opposite, occasionally 

 some alternate, subcordate-ovate or deltoid, acute, serrate or denticulate, 3-ribbed from the 

 base, either sessile or sliort-petioled, rough; veiiilets reticulated: heads mostly corymbose 

 and short-peduncled : involucre campanulate, fully half-inch long, equalling the barely con- 

 vex disk, commonly lanceolate and acuminate, erect, in 2 or 3 series : cliaffy bracts of the 

 receptacle gradually acuminate: akenes narrowly cuneate-oblong, almost equalled by the 

 chaffy awns; tlie intermediate palea equalling the breadth of the akeue, narrowly oblong, 

 rigid. — PL Wright, i. 107, ii. 88. — Near water-courses, W. Texas to Arizona, \Vri(//it., 

 tSchott, Lemm.on, &c. (Mex., Schajf'uer.) 



•i— •^~- Shrubby or lignescent at base, low, not tomentose : leaves hispidulous-scabrous, mostly 

 alternate, rigid. 



V. laciniata, Gray. Branching : leaves lanceolate or obscurely hastate, from laciniate- 

 pinnatifid to nearly entire, abruptly petioled, an inch or two long, beneath with very prom- 

 inent pinnate veins: branches bearing several cymosely disposed and pedunculate lieads: 

 involucre nearly half-inch high ; its bracts lanceolate or the outermost ovate, acute or acumi- 

 nate : rays half inch long : akenes sparingly pilose, glabrate : pappus-awns chaffv ; the inter- 

 mediate cliaffy paleae laciniate or erose. — Bot. Mex. Bound. 89, & Bot. Calif, i. 354. — San 

 Diego Co , California, Schott, Newberry, Cleveland, &c. (Lower Calif.) 



