544 PROCEEDINGS OF THE AMERICAN ACADEMY 



cauline leaves obtuse and tapering into a short and margined petiole. 

 Pass El Robles in Salinas Valley, south of San Luis Obispo, with a 

 naked head (said to have the disk sometimes 4 inches in diameter, but 

 in the specimens much smaller), and the cauline leaves more petioled. 

 I have a radical leaf (about 1^ feet long and 4 J- inches wide) and a 

 head of this, collected by Dr. Andrews, probably near San Francisco. 

 W. helianthoides, Nutt. (of which, however, I have not present access 

 to any specimen), W. robusta, Nutt., and W. angustifolia, Nutt., belong 

 probably to one species. The following, with the aristifoi-m pappus of 

 the above, has the wooUiness and aspect of W. helenioides, but much 

 smaller heads. 



Wyethia mollis : arachnoideo-lanata, aetate subdenudata ; caule 

 1 - 3-cephalo ; foliis oblongis ovalibus ovatisque omnibus petiolatis in- 

 tegerrimis; involucri squamis ovato-lanceolatis cum liguUs elongatis 

 10-12 ; acheniis linearibus e pappo breviter coroniformi longius biaris- 

 tato vel in radio triaristato. — Mono Lake and summit of Sonora Pass 

 in the Sierra Nevada. Also near Carson City, Nevada, Dr. C. L. 

 Anderson ; and in great patches on Mount Davidson at Virginia City, 

 H. G. Bloomer. The Nevada specimens much more densely clothed 

 with a coat of floccose white wool than those of Prof. Brewer : this may 

 readily be rubbed off, and partly wears away from the old leaves. 

 Radical leaves a foot or less in length, besides the stout petiole : cauline 

 leaves 4 to 6 inches long. Scales of the involucre about an inch long, 

 the outer and larger ones a little surpassing the disk, very woolly. 

 Ligules an inch and a half long. Achenia about half an inch long, the 

 subulate awns 3 or 2 lines long. — Mr. Nuttall regretted, as all must 

 do, that this genus could not retain De Candolle's name of Alargonia. 



Helianthus Bolanderi : Annui ; caule hirsuto bipedali et ultra 

 ramoso ; foliis omnibus alternis ovato-lanceolatis sen ovato-rhomboideis 

 crebre SiEpius grosseque serratis e basi attenuata trinerviis longe petio- 

 latis ; involucri squamis foliaceis lineari-lanceolatis sensim attenuatis 

 acutissimis patentibus vix imbricatis hirsutis discum superantibus ligu- 

 las 10-12 subaequantibus ; acheniis sericeis ; pappi paleis 2 aristae- 

 formibus. — At the Geysers, Lake County, near Clear Lake, H. N. 

 Bolander. The root is pretty clearly annual ; and the species (with 

 leaves somewhat like those of H. petiolaris, but much more serrate, 

 &c.) is very different from any other we have. Heads small, the 

 brown-purple disk less than an inch in diameter, the involucre resem- 

 bling that of JI. decapetalus or H. tracheliifoHui. 



