172 University of California Publications in Botany [Vol. 9 



P. Newberryi Small (Bull. Torr. Bot. Club, vol. 21, p. 170. 1894), 

 of the Cascades of Oregon and Washington, is a close ally if it be 

 really separable. 



Monolepis spathulata Gray (Proc. Am. Acad., vol. 7, p. 389. 1867), 

 though described from "Sierra Nevada, at Mono Pass," a station 

 within our limits, is really an Upper Sonoran and Arid Transition 

 species ( Chenopodiaceae ) . 



Abronia alpina Brandegee (Bot. Gaz., vol. 27, p. 456. 1899), with 

 type locality "in Monatchy meadows of Mt. Whitney, at an elevation 

 of 7000-8000 ft., and at Templeton near the craters, growing in loose 

 granite sand," based upon Purpus 1877, 1497, is not uncommon about 

 the borders of meadows in the Sierra of Tulare County (edges of 

 Eamshaw meadows, Canadian, 8,700 feet, H. M. and G. R. Hall 8412 ; 

 sandy plains, Wenatchie meadows, 7-8,000 feet, Purpus 1877) and 

 has been collected within the boreal region, though belonging to a 

 famil}^ (Nj'ctaginaceae) of southern affinities. It is perhaps of some 

 interest to note that another species of Abronia {A. micrantha Gray) 

 similarly rises to the border of the boreal region of the mountains 

 of Colorado. 



21. CAEYOPHYLLACEAE (Pink Family) 



Calyx gamosepalous, forming a tube 1. Silene 



Calyx with sepals free or united only at base. 

 Petals entire or merely notched, rarely none. 



Styles 4 or 5, alternate with the sepals 2. Sagina 



Styles usually 3, opposite the sepals 3. Arenaria 



Petals bifid or lobed, rarely none. 



Styles usually 3; capsule short 4. Stellaria 



Styles 4 or 5; capsule elongated 5. Cerastium 



1. SILENE 



Flowers nodding with stamens and styles long-exserted 1. S. Bridgesii 



Flowers erect with stamens and styles included or little exserted. 



Petals without appendages or auricles; calyx cleft to the middle or below 



2. S. aperta 



Petals with appendages, sometimes auricled; calyx cleft only for % its length. 

 Stems and foliage glandular-puberulent; densely caespitose with stems 



3-10 inches high and with usually a single terminal flower 



3. S. Watsoni 



Stems and foliage puberulent or glabrous, never glandular; stems 10-24 

 inches high and usually several (3-5) flowered 4. S. Douglasii 



1. Silene Bridgesii Rohrb., App. Ind. Sem. BeroL, p. 5. 1867. 

 Monogr. Gatt. Silene, p. 204. 1868. 

 S. ineompta Gray, Proc. Am. Acad., vol. 7, p. 330. 1868. 



Type locality. — "California, Bridges." 



Range. — Sierra Nevada southward from Lake Tahoe. 



Zone. — Transition, rising into the Canadian. 



