340 PROCEEDINGS OF THE AMERICAN ACADEMY 



numerous leaflets, smaller flowers, and more slender acute pods. 

 C. angiihda from Oregon is well characterized by its 3-foliolate leaves 

 with nearly equal and similar leaflets, its short pods on slender pedi- 

 cels, and by its slender loose-flowered habit. 



Found in the mountains from the northern Sierra Nevada (1890 

 Brewer, near Sonora Pass at 8-10,000 feet altitude; 235 Anderson, 

 near Carson City, = G. paiicisecta, var. angidata of Anderson's Cata- 

 logue of Nevada plants) to Oregon (31 Ilall = C. oligosperma, Gray 

 in Proc. Am. Acad. 8. 37G) and eastward to Wyoming (Ilayden, east 

 slope of the Teton Range, Idaho, and on Henry's Fork of the Green 

 IXiver, = C. paucisecta of Hayden's Reports for 1870 and 1872). 



SiLENK MONANTiiA. Glubrous ; Stems very weak, elongated, as- 

 cending, branched ; leaves narrowly oblanceolate, 1 ^-3 inches long, 

 acnminate, shortly ciliate at base ; flowers terminal on elongated 

 peduncles, not reflexed ; calyx inflated, thin and submembranous, G 

 lines long, slightly jiuberulent, the triangular acutish teeth only net- 

 veined, the scarious edge subciliate ; jietals 9 lines long, apparently 

 pinkish or white, the naked claw ve?'y narrowly auricled, limb bifid 

 with broad rounded lobes, coronal appendages lanceolate, entire, half 

 as long as the limb ; filaments naked ; styles short ; ovary oblong, 

 rather long-stipitate. — Collected by Kellogg & Harford (n. 78), grow- 

 ing on the debris at base of Castle Rock, CasL-ades, Washington Ter- 

 ritory. This and the two next following species are the only known 

 western Silenes of the group with inflated calyces.* 



* Our western species of Silene may be arranged and partially differentiated 

 as follows : — 



§ Annuals. 



1. S. ANTiRRuiNA, Linn. Erect, glabrous ; flowers small, in an open naked 

 dicliotomous panicle. — Tlirougliout the United States. 



§§ Perennials. 

 * Dwarf, matted ; flowers terminal and solitary. 



2. S. ACAULis, Linn. Alpine and arctic. 



* * Calyx campanulate, inflated. 



3. S. jHONANTnA. Stems weak, elongated; flowers terminal and solitary, 

 long-pedunculate; limb bifid. — Washington Territory. See above. 



4. S. CAMPANULATA. Stcms crect, dichotomous at the summit ; flowers few, 

 pendent; claws and filaments pubescent; limb 4-parted with bifid segments. — 

 North-western California. See p. o4L 



5. S. Lyallii. Stems erect, slender ; flowers more numerous, in a loose pnni- 

 cle, erect; limb bifid, brownish purple. — Washington Territory. See p. 342 



