132 ALSINACEAE. 



Leaves linear-lanceolate, 3-nerved, acutish, flat, less than i cm. long. 



4. A. quadrivalvis. 

 Sepals obtuse. 5- ^- obtusiloba. 



i. Alsinopsis macrantha Rydb. In sandy soil in the mountains of Colo. 

 — Little Kate Basin, La Plata Mountains. 



2. Alsinopsis propinqua (Richards.) Rydb. (Arenaria propinqua Richard- 

 son; A. verna hirta Am. auth. ; A verna aequicaulis A. Nels.) In sandy soil 

 from Hudson Bay and Mackenzie River, to B. C, Colo, to Utah. — Alt. 8000- 

 13,000 ft. — Pike's Peak; Silverton; Saddle Cliflfs; Georgetovifn ; Little Kate 

 Basin, La Plata Mountains ; near Pagosa Peak ; South Park ; Boreas ; Beaver 

 Creek; Chambers' Lake; Eldora to Baltimore. 



3. Alsinopsis Rossii (Richards.) Rydb. (Arenaria Rossii Richards.) In 

 arctic-alpine regions from the arctic coast to Colo, and Wash. — Alt. 11,000- 

 I3;S00 ft. — Sierra Blanca; Bald Mountain. 



4. Alsinopsis quadrivalvis (R. Br.) Rydb. {Arenaria quadrivalvis R. Br.) 

 In alpine-arctic situations, along the arctic coast of North America and on 

 alpine peaks in Colo. — " Colorado." 



5. Alsinopsis obtusiloba Rydb. {Arenaria obtusa Torr. ; not All. ; A. biilora 

 S. Wats., in part; A. Sajanensis Robinson; scarcely Willd.) On exposed 

 mountain tops from Alb. to B. C, N. M. and Utah. — Alt. 10,000-13,500 

 ft— Mt. Garfield; Pike's Peak; Beaver Creek; Ward, Boulder Co.; Mount 

 Ouray; Alpine Tunnel; Mt. Harvard; Cameron Pass; Iron Mountain; West 

 Spanish Peak; near Pagosa Peak; Gray's Peak; Mt. Princeton; Seven 

 Lakes ; Caribou ; Empire ; headwaters of Clear Creek ; Massif de 1' Arapahoe ; 

 mountains near Como; Cameron Pass; Graymont; Beaver Creek; Berthoud 

 Pass ; northwest of Como ; Gray's Peak ; Cameron Pass ; Graymont ; Ethel 

 Peak. 



7. TISSA Adans. Sand Spuery. 



I. Tissa sparsiflora Greene. Sandy and alkaline soil from Wyo. to B. C, 

 Colo, and Ore. — New Windsor. 



Family 52. CARYOPHYLLACEAE Reichenb. Pink Family. 



Calyx-ribs, usually 10, at least twice as many as the teeth, running both into the 

 teeth and the sinuses. 



Styles mostly 3; capsule usually septate at the base. i. Silene. 



Styles 5 ; capsule i-celled to the base. 2. Lychnis. 



Calyx strongly 5-angled and s-ribbed. 3. VACc.'iRiA. 



I. SILENE L. Catchfly, Campion. 



Annuals. 



Glabrous or nearly so or the upper nodes glutinous. 



Stem-leaves linear or linear-lanceolate ; bracts narrowly linear-lanceolate. 

 Petals exceeding the sepals by 2-5 mm. ; blade obovate-cuneate, 2-cleft. 



I. 6'. antirrhina. 



Petals none or small, not exceeding the sepals ; blade cuneate, truncate or 



emarginate at the apex. 2. 5'. antirrhina depauperata. 



Stem-leaves oblanceolate or lanceolate ; bracts lanceolate, more or less scarious- 



margined below. 3. S. antirrhina vaccariifolia. 



Viscid-pubescent or hirsute throughout. 4. 5'. noctiAora. 



