1921] Smiley: Flora of the Sierra Nevada of California 175 



Specimens examined. — Cliffs at Webber Lake, Lemmon 30021/2 ; 

 Half-Moon Lake, Tahoe, 8,100 feet, Hall 8823 ; Angora Peak, Tahoe, 

 east side at 7^500 feet, Smiley 16 ; near Soda Springs, Jones 2502. 



This variety distinguished by the absence of viscid pubescence on 

 the slender, weak stems. 



4b. Silene Douglasii Hook. var. macrocalyx Robinson, Proc. Am. 



Acad., vol. 28, p. 145. 1893. 

 Type locality.— "B.umboldt Mts., W. Nevada." 

 Specimen examined. — Mt. Rose, 10,200 feet. Heller 10328, doubt- 

 fully referred. 



2. SAGINA 



1. Sagina Linnaei Presl., Rel. Haenk., vol. 2, p. 14. 1835. 



Type locality. — Eurasiatic. 



Range. — Holarctic realm; in America south on the Pacific Coast 

 from Alaska to mountains of southern California. 



Zone. — Transition and above. 



Specimens examined. — Webber Lake, Lemmon in 1874; Cloud's 

 Rest, Yosemite, Congdon, August 23, 1890; head of Fall Creek, 

 Ormsby County, Baker 1332. 



The Arctic Pearlwort occurs in the Sierra at all elevations above 

 the main forest zone but is nowhere common. Miss Eastwood found 

 it at East Lake, in the high mountains of Tulare County®^ and Mer- 

 riam^^ reports it as occurring above timber line on Mt. Shasta. 



3. ARENARIA 



Pod splitting into 3 entire valves; petals shorter or subequal to the sepals 



1. A. NuttaUii 



Pod splitting into bifid valves; petals longer than the sepals. 



Densely caespitose alpine; steins %— 3 inches high; leaves minute (^^ inch 



or less long) and somewhat fleshy 2. A. compacta 



Taller subalpine plants; leaves not in the least fleshy. 



Flowers aggregated into dense clusters, sessile or nearly so 3. A. congesta 



Flowers obviously pedicelled (pedicels %-% inch long) in the open cyme. 



4. A. capillaris 



1. Arenaria NuttaUii var. gracilis Robinson, Proc. Am. Acad., vol. 

 29, p. 304. 1894. 



Type locality. — ^"California Mts. above Big Tree Grove, Bokinder 

 4976; Long meadow, Tulare Co., Palmer, Coville and Funston." 



Range. — Sierra Nevada region from the Tahoe region southward 

 to the mountains of southern California. 



Zone. — Hudsonian and Arctic-alpine. 



