CATALOGUE. 157 



Baccharis sergiloides, Gray, I. c. — Much branched and nearly leafless 

 shrub; branchlets green, jointed; older branches brown; leaves oblanceolate 

 or nearly linear, 3-8" long, or reduced to mere scales; heads panicled; 

 scales ovate, thickish, with a green tip (or sometimes the inner ones linear); 

 achenia few-nerved. The young green branchlets are often more or less 

 covered with a glistening, gumny exudation. As in the preceding {B. 

 Emoryi), the pappus of the sterile flower is clavate, though here it is more 

 copious. 



Pluchea camphorata, DC. — Telescope Mountain, Southeastern Cali- 

 fornia. 



Tessaria borealis, T. & Gr. — Nevada, 



Gnaphalium palustre, Nutt, — San Luis Valley, Colorado (426, 428). 



Gnaphalium Sprengelii, Hook. & Am. (G. luteo-album, var. Spren- 

 gelii, in vol. v of King's Report,)— Cottonwood, Arizona (356); also from 

 Utah. 



Gnaphalium strictum, Gray. — Annual (?), simple or much branched 

 from the root, canescently woolly throughout; leaves linear, 6-18" long; 

 heads condensed into woolly glomerules, and one in each axil, forming thus 

 an interrupted spike; outer involucral scales obtuse, rather ovate, as long 

 as the disk-flowers, inner longer, narrower, and more acute; achenia oblong, 

 smooth. — San Luis Valley, Colorado (425, 427), and a depauperate form 

 from Twin Lakes, Colorado (423) 



Antennaria dioica, Gaertn. — Colorado (444, 443, 436); common. 

 The Survey has also the var. rosea from Nevada. 



Antennaria Carpathica, R. Br. — South Park, Colorado (208, 433, 

 434). 



Anaphalls* margaritacea, Benth. (Antennaria margaritacea, R. Br.) — 

 Collected by Dr Oscar Loew on the White Mountains of Arizona, probably 

 at a considerable altitude. 



"Anaphalis, DC. — "Heads discoid, incompletely dioecious; viz. the pistillate with filiform, 2-4- 

 toothed corollas very numerous, and a few (or occasionally no; hermaphrodite but sterile flowers, with 

 tubular 5-lobed corollas in the centre; the staminate nearly as in Antennaria. Involucre campanulate, 

 of many ranks, of mostly snow-white scarious scales. Receptacle flat, naked. Stylo in the staminate 

 flowers usually 2-cleft merely at the apex. Pappus a single series of capillary bristles, unconnected at 

 base, in the-sterile flowers (at least in our species) slightly thickened upwards." — Gray, in El. Cal. 

 1, p. 340: see, also, Gray in Proc. Amer. Acad, viii, p. G03. 



