240 CONTEIBUTIONS FROM THE NATIONAL HEEBARIUM. 



8. ALSINOPSIS Small. 



Densely tufted perennials, mostly less than 5 cm. Mgh; leaves narrow, usually 

 subulate; flowers solitary in the axils or in terminal cymes; sepals 5; petals 5, entire 

 or emarginate; stamens usually 10; styles normally 3; capsules slightly longer than 

 broad, opening by as many valves as there are styles. 



KEY TO THE SPECIES. 



Sepals obtuse 1. A. obtusiloba. 



Sepals acute 2. A. propinqua. 



1. Alsinopsis obtusiloba Rydb. Bull. Torrey Club 33: 140. 1906. 

 Arenaria obtusa Torr. Ann. Lye. N. Y. 2: 170. 1827, not All. 1785. 

 Type locality: "On the higher parts of the Rocky Moimtains." 

 Range: British America to Utah and New Mexico. 



New Mexico: Santa Fe and Las Vegas mountains; White Mountain Peak. Mead- 

 ows, in the Arctic-Alpine Zone. 



2. Alsinopsis propinqua (Richards.) Rydb. Bull. Torrey Club 33: 140. 1906. 

 Arenaria propinqua Richards. Bot. App. Frankl. Joum. 17. 1823. 

 Arenaria verna aequicaidis A. Nels. Bull. Torrey Club 26: 352. 1899. 

 Arenaria aequicaulis A. Nels. in Coulter, New Man. Rocky Mount. 185. 1909. 

 Type locality: Barren grounds from Point Lake to the Arctic Sea. 

 Range: British America to Utah and northern New Mexico. 



New Mexico: Top of Las Vegas Range above Sapello Creek (Cockerell). High 

 mountains, in the Arctic-Alpine Zone. 



60. SIIENACEAE. Pink Family. 



Herbaceous annuals or perennials with opposite, exstijjulate, mostly sessile leaves; 

 flowers in cymes, sometimes thyi'siform; calyx tubular ^dth a short limb; petals 

 clawed; fruit a capsule, dehiscent by longitudinal valves. 



KEY TO THE GENERA. 



Calyx strongly 5-angled or 5- ribbed, or both. 



Calyx cylindric, not angled; perennials 1. Saponaria (p. 240). 



Calyx ovoid, angled; annuals ' 2. Vaccaria (p. 241). 



Calyx ribs usually 10, at least twice as many as the 

 teeth. 

 Styles 5, alternate with the foliaceous calyx teeth. . 5. Agrostemma (p. 242). 

 Styles 3 to 5, opposite the short, not foliaceous, 

 calyx teeth. 

 Styles mostly 3; capsules usually septate at the 



base 3. Silene (p. 241). 



Styles 5; capsule 1-celled to the base 4. Wahlbergella (p. 242). 



1. SAPONARIA. L. 



Perennial herb with stout, mostly simple, very leafy stems and large corymbose 

 pink flowers; calyx 5-toothed, obscurely nerved; petals 5, long-clawed; ovary 1-celled 

 or partially 2 to 4-celled; styles 2; capsule dehiscent by 4 short apical teeth. 



1. Saponaria oflacinaUs L. Sp. PI. 408. 1753. Bouncing Bet. 



Type locality: "Habitat in Europa media." 



Range: A native of Europe, often established as a roadside weed in North America. 

 New Mexico: Farmington {Standley 6873). 

 Well established along ditch banks in this locality. 



