78 BOTANY. 



examination of the flowers. The plant may, therefore, for the present, remain appended to W. 

 helenioides. 



Wyethia robusta, Nutt. in Trans. Amer. Phil. Soc. 1,p. 351 ; Torr. & Gray, Ft. 2, p. 299, 

 excl. syn. With the last. Radical leaves lanceolate, a foot long. Not well named, as the 

 stems are quite slender next the ground. They bear, in a crowded manner, many alternate and 

 pinnatifid leaves of oblong or spatulate outline, tapering into a margined petiole. The leaves, 

 including the petiole, are one or two inches long ; their lobes one to three lines long, oblong, 

 obtuse, entire or obtusely toothed. Like the rest of the plant, they are viscid or glandular-pu- 

 bescent. A solitary peduncle, l\ inch long, bears a single head, which is nearly an inch in 

 diameter. Involucre purplish ; the outer scales broadly oblong-lanceolate ; the inner lanceolate. 

 Rays small, linear, about 20 in number, apparently light yellow, half an inch long. Its tube 

 and the lower part of the disk-corollas beset with glandular hairs. Achenia 3 to 4 lines long, 

 flat, blackish, softly and very villous, except perhaps towards the base ; the hairs at the sum- 

 mit as long as the diaphanous paleas of the pappus. 



Oxyura chrysanthemioides, DC. Prodr. 5, p. 693. Petaluma, California. 



Layia calliglossa, Gray, PL Fendl. p. 103; var.? oligocu^eta; pappi aristis 2-3. Peta- 

 luma, California. 



Madaria elegans, DC. Prodr. 5, p. 692. McCumber's. 



Lagophylla filipes, Gray, in Mex. Bound. Surv. Hemizonia filipes, Hook. & Am. Bot. 

 Beech, p. 356. With the last, in flower only. Fruiting specimens of this are still a desideratum. 



Achillea millefolium, L. McCumber's, shores of Klamath lake, &c. 



Matricaria discoidea, DC. Prodr. G,p. 51. Petaluma. 



Artemisia tridentata, Nutt. Columbia river. 



Artemisia Ludoviciana, Nutt.; var. Gnaphalioides, Torr. & Gray, Fl. 2, p. 420. Pit river. 



Artemisia dracunculoides, Pursli. Des Chutes basin. 



Gnaphalium luteo-album, Linn. (G. Sprengelii, Hook. & Am., in part.) Sonoma. 



Gnaphalium palustre, Nutt.; Torr. & Gray, Fl. 2, p. 427. Canoe creek. 



Gnaphalium purpureUiM, L. Petaluma. 



Antennaria Geyeri, Gray, PI. Fendl. adn.p. 107. McCumber's. These are fine specimens 

 of the male plant of this rare species, which Sir William Hooker confounded with a South 

 American Gnaphalium, (G. alienum, Hook. & Am.) But it is a true Antennaria. 



Antennaria luzuloides, Torr. & Gray, Fl. 2, p. 431. Hat creek and McCumber's, N. Cal. 



Antennaria margaritacea, R. Br. Lakes south of Crater pass, Cascade mountains, 0. T.; 

 August. 



Senecio triangularis, Hook. Fl. Bor.-Amer. l,p. 322, t. 115. Upper Des Chutes river, near 

 the edge of the water ; September. 



Arnica Chamissonis, Less.; Torr. & Gray, Fl. 2, p. 449. A narrow-leaved state ; shores of 

 Klamath lake, O. T. 



Arnica mollis, Hook.; Torr. & Gray, I. c. Crater pass, near the snow line. A state with 

 narrower leaves than usual, and tapering to the base. 



Tetradymia canescens, DC. Prodr. 6, p. 440. Fort Reading, Cal. The leaves are only a 

 little shorter than in Douglas' plant, and the flowering branches (which are herbaceous from 

 a shrubby base) are nearly as slender. 



Stephanomeria minor, Nutt.; Torr. & Gray, Fl. 2, p. 472. Hat creek and Pit river, Cal. 



Stephanomeria virgata, Benth. Bot. Sulph. p. 32. A much larger flowered variety, but 



