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. 7, p. 351 ; Torr. & Gray, Fl. 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, 1| 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 viilous, except perhaps towards the base ; the hairs at the sum 

 mit as long as the diaphanous palere of the pappus. 



OXYURA CHRYSANTIIEMIOIDES, DC. Prodr. 5, p. 693. Petaluma, California. 



LAYIA CALLIGLOSSA, Gray, PL Fendl. p. 103 ; var.? OLIGOCIIJETA ; pappi aristis 2-3. Peta 

 luma, California. 



MADARIA ELEGANS, DC. Prodr. 5, p. G92. McCumber s. 



LAGOPHYLLA FILIPES, Gray, in Hex. Bound. Surv. Hemizonia filipes, Hook. & Am. Bot. 

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



ACIIILLEA MILLEFOLIUM, L. McCumber s, shores of Klamath lake, &c. 



MATRICARIA DISCOIDEA, DC. Prodr. 6, p. 51. Petaluma. 



ARTEMISIA TRIDENTATA, Nutt. Columbia river. 



ARTEMISIA LUDOVICIANA, Nutt.; var. GNAPIIALIOIDES, Torr. & Gray, Fl. 2, p. 420. Pit river. 



ARTEMISIA DRACUNCULOIDES, Pursh. Des Chutes basin. 



GNAPHALIUM LUTEO- ALBUM, Linn. (G. Sprengelii, Hook. & Arn., in part.) Sonoma. 



GNAPIIALIUM PALUSTRE, Nutt.; Torr. & Gray, Fl. 2, p. 427. Canoe creek. 



GNAPHALIUM PURPUREUM, 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. & Arn.} But it is a true Antennaria. 



ANTENXARIA 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.-Amcr. I, 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, 0. 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. Sulpli. p. 32. A much larger flowered variety, but 



