650 PROCEEDINGS OF THE AMERICAN ACADEMY 



cola; caule simplici e i-liizomate gracili repente foliisque oppositis 

 tomento tenui argentatis ; capitulo specioso ; floribus aureis. 



WiiiTNEYA DEALBATA. — Dry woods on the Yosemite trail, alt. 

 7,000 feet. Stem - simple, a foot bigli, naked above, and bearing a 

 single head, or with an additional monocephalous peduncle from the 

 axil of the uppermost leaves. Leaves entire, mucronate ; the radical 

 or subradical ones obovate or oval, 3 - 5-nerved at the base, tapering 

 into a flat or winged petiole ; the cauline usually a single pair, smaller 

 and narrower, sessile, and sometimes connate. Rarely there are two 

 alternate bracts. Lateral peduncles, when they occur, usually bibracte- 

 ate. Involucre half an inch long, equalling the disk, tomentulose. 

 Tube of the corolla glandular-pubescent. Ligules over an inch long, 

 lanceolate-oblong, 7 - 9-nerved, minutely three-toothed at the apex. 

 Branches of the style in the disk-flowers tapering into a bluntish hairy 

 apex, but not tipped with any distinct cone or appendage. Achenia 

 hirsute-pubescent ; those of the ray flat, 3-nerved on the inner face, and 

 obscurely so on the outer face ; those of the disk apparently similar 

 and fertile, but immature in the three specimens collected. — This 

 handsome Composita, doubtless belonging either to the Senecionece or 

 HeUniex (although destitute of pappus), is dedicated to the eminent 

 Geologist in charge of the Californian State Survey, Professor Jo^iah 

 D. Whitney, under whose superintendence a most interesting and ex- 

 tensive collection of dried plants of California, especially of the high 

 sierras, has been made. 



RAILLARDIA, Gaudichaud, § Raillardella. 



Achenia magis compressa. Pappus niveus. Styli rami appendice 

 tenuiori superati. Receptaculum planum seu convexum. — Herbae 

 acaules, pumilte, regionum alpinarum California^ montium incolge, rhizo- 

 matibus subterraneis repentibus apice folia rosulata lanceolata subuni- 

 nervia scapumque gracilem monocephalum proferentibus. 



Raillardia (Raillardella) argentea : foliis spathulato-lanceo- 

 latis utrinque argenteo-sericeis ; involucro cylindrico 7-15-floro cum 

 scapo nudo glanduloso, squamis longe ultra medium coalitis ; recep- 

 taculo piano glabro. — Sonora Pass, 8,000- 10,000 feet, and Ebbett's 

 Pass, at about the same altitude, on dry slopes. — Leaves one or two 

 inches long, tapering into a short petiole, subcoriaceous ; the silvery- 

 gilky pubescence perhaps somewhat deciduous with age. Scape H to 



