270 COMPOSIT.E. Viguiera. 



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

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

 tips : akenes obovate-obloug, below sparseh' and toward the summit thickly villous witli 

 slender hairs : pappus none, or a few ver}' delicate setiform squanielhe shorter than the hairs 

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

 have Desert, Parish. 



102, VIG-UIERA, HBK. (Dr. A. Viguier, botanist, of Montpellier.) — 

 Herbaceous or sometimes suffruticose plants (of the warm j^arts of America) ; 

 with only the lower or rarely all the leaves opposite, yellow-Howered 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 strongly convex (but at fiist often low) and the re- 

 ceptacle conical: root probably annual or biennial. 



V. h.elianthoides, HBK. Minutely liispidulous-pubescent or scabrous, green, or some- 

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

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

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

 ovate-lanceolate, from sliglitly to coarsely serrate, triplinerved fi-om near the base : heads 

 paniculate, usually slender-peduncled : involucre only 3 lines iiigh, shorter than the disk, 

 nearly simple, of subulate or linear liracts : rays 7 to 10, obovate or oblong, over half-inch 

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

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

 the truncate summit. — HBK. 1. c. ; Benth. & Hook. 1. c. V. hcliantliotdes, Sajrceana, laxa, 

 brevipes, and probably T'. microcline, triqurtra, also with little doubt V. dentata (Spreng., the 

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

 Fl. ii. 318. Ilelianthdla latifoVta, 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 In-oadly ovate to oblong-lanceolate ; the lower opposite : chaff of the 

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

 579. — S. Arizona, Princjle, a greener form, and in adjacent Mexico, Palmer. (Mex.) 



* * Disk flattish or convex : receptacle at maturity flat or hardly conical. 

 -I— Herbaceous to the base from a probably perennial root, not canescent nor tomentore. 

 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, subcord.ate-ovate or deltoid, acute, serrate or denticulate, .3-ribbed from the 

 base, either sessile or short-petioled, rough; veinlets 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 : chaffy bracts of the 

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

 chaffy awns ; the intermediate paleaj equalling the breadth of tlie akene, narrowly oblong, 

 rigid. — PI. Wright, i. 107, ii. 88. — Near water-courses, W. Texas to Arizona, Wright, 

 Schott, Lemvion, &c. (Mex., Schnjf'iwr.) 



+- -h- Shrubby or lignescent at base, low, not tomentosc: leaves hispidulous-scabrons, mostly 

 alternate, rigid. 

 V. laciniata, Guav. 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: brandies bearing several cymosely disposed and pedunculate heads: 

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

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

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

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



