374 COMPOSITE. Whitneya. 



(from 4 inches to a foot in length) : leaves nearly all once or twice pinnatifid : head 

 large : rays 40 or 50 in about 2 ranks, cuneate-oblanceolate (fully half an inch 

 long) : akenes as in the preceding, smooth and glabrous or with some resinous 

 globules. — Torr. in Emory Eep. 144, t. 6. 



In the Californian collection of Coulter. Very probably collected hi Arizona or Sonora, where 

 this species occurs, as also farther eastward. 



65. WHITNEYA, Gray. 



Head many-floweTed, with 7 to 9 pistillate fertile rays : the disk-flowers appar- 

 ently perfect, but infertile. Involucre campanulate, of 9 to 12 thin-herbaceous 

 la'nceolate- oblong or ovate-lanceolate and ecpvial scales, in a single or somewhat 

 double series, more or less concave at base. Receptacle conical, somewhat foveolate, 

 villous. Eays large, elongated, minutely 3-toothed at the apex, many- (10 - 16-) 

 nerved, the nerves also prominent on the short tube, becoming thin-papery, and 

 persistent on the mature akene. Disk-corollas tubular-funnelform, with a veiy 

 short proper tube, persistent on the infertile ovary, obtusely 5-toothed. Anthers 

 linear. Style-branches of the disk-flowers linear, hirsute-puberulent externally, 

 extended a little beyond the stigrnatic lines into an obtusish tip. Akenes of the 

 ray oblong somewhat obcompressed, obtuse at both ends, lightly several-nerved, 

 wholly destitute of pappus : those of the disk similar, but sterile. — A low perennial 

 herb of the Sierra Nevada, canescent ; the mostly simple stems bearing 2 or 3 pairs 

 of opposite entire or obscurely denticulate leaves, and solitary or few slender- 

 peduncled showy heads of golden yellow flowers. — Gray, in Proc. Am. Acad. vi. 

 549, & ix. 195. 



1. W. dealbata, Gray, 1. c. About a foot high, from slender and naked creep- 

 ing rootstocks : leaves obovate or spatulate and tapering into petioles, or the upper 

 small and lanceolate, hoary with a very tine and close woolliness : rays oblong-lan- 

 ceolate, about an inch in length. 



In open woods, &c, at an elevation of 5,000 to 7,000 feet, from above the Mariposa Sequoia 

 grove northward along the Sierra Nevada, Brewer, Bolander, Gray, &c. A handsome plant, of 

 a very distinct genus, which was dedicated to the accomplished Director of the Californian State 

 Geological Survey, in the prosecution of which it was discovered. It seems to occur through a 

 considerable range in the Sierra ; and it is likely to be prized in cultivation. The original 

 character of the genus is here materially corrected. The rays commonly bear rudiments of sta- 

 mens in the form of sterile filaments : their lower surface is puberulent, as also the akenes and 

 nearly the whole surface of the disk-corollas. 



66. BITRRIELIA, DC, Benth. 



Head several-flowered, with one to five very short rays which hardly equal the 

 more numerous disk-flowers, all fertile. Involucre cylindraceous, of 4 or 5 (rarely 3) 

 oblong thin-herbaceous scales. Eeceptacle subulate or almost filiform, rough with 

 projecting points on which the akenes are inserted. Tube of the corollas slender, 

 as long as the campanulate 4 - 5-lobed limb and as the barely spreading oval or 

 oblong ligule. Anthers oblong, more or less auricled or sagittate at base, tipped 

 with a slender lanceolate or linear-filiform appendage. Style-branches tipped with 

 subulate-acute minutely hirsute appendages. Akenes long-linear or somewhat fusi- 

 form, flattish, with indistinct marginal or other nerves. Pappus of flattened subu- 

 late awns or awn-like rigid scales, fully as long as the corolla, of the disk-flowers 

 2 to 4, of the ray one or two or rarely none. — Small and slender annuals (all 



