36 CARYOPHYLLACE^E. (PINK FAMILY.) 



8. A. biflora, var. carnosula, Watson. Stems creeping; branches 

 mostly 1-flowered : leaves narrowly linear, nerveless : sepals linear, very obtuse, 

 cucullate at the summit : petals much longer than the sepals and capsule. 

 Bibl. Index, i. 94. A. a/pina of the Fl. Colorado. Colorado. 



Var. obtlisa, Watson. Leaves obtuse, carinate, serrulate-c/'liate, obscurely 

 3-nerved: peduncles glandular-pubescent: petals about half longer than the 

 oblong sepals. Watson, 1. c. A. arctica of Hayd. Rep. for 1870-72, and 

 A. arctica, var. obtusa, of Bot. King's Exp. and Fl. Colorado. Abundant in 

 the mountains of Colorado, the Uintas, about Yellowstone Lake, and north- 

 ward throughout the Arctic regions. 



9. A. stricta, VVatson. Leaves subulate-triquetrous, rather obtuse, scarcely 

 equalling the flower or exceeding the calyx, mostly shorter than the internodes, 

 with manifest lateral nerves : peduncles 1-flowered : petals sometimes wanting. 

 Watson, 1. c. Alsine stricta, Wahl. A. /?oss of Hayd. Rep. 1870 and Fl. 

 Colorado. A. stricta, Michx., of the Eastern Flora, becomes A . Michauxii, 

 Hook. Colorado, Wyoming, and northward. 



3. Parts of the flower sometimes in fours: valves of the, capsule bijid : young 

 ovary S-celled: seed appendaged at the hilum ivith a small caruncle. 



MCEHRINGIA. 



10. A. lateriflora, L. Sparingly branched, erect, minutely pubescent : 

 leaves oval or oblong, obtuse: peduncles usually 2-flowered, soon becoming 

 lateral: sepals oblong, obtuse: petals exserted. From Colorado to Alaska, 

 and eastward across the continent. 



11. A. macrophylla, Hook. Stems ascending, mostly simple, puberu- 

 t lent above : leaves 3 to 4 pairs, narrowly lanceolate, acute at each end, bright 

 * green : flowers few on slender pedicels : sepals ovate-oblong, acuminate : petals 



included. From the Bitter Root Mountains to Washington Territory and 

 California; also in New Mexico. 



6. S A GIN A, L. PEARLWORT. 



Low green herbs, with subulate or filiform glabrous leaves, and small 

 terminal usually long-pedicelled flowers. 



1. S. decumbens, Torr. & Gray. Stems decumbent, ascending: leaves 

 somewhat secund, mucronate : peduncles much longer than the leaves : petals as long 

 as the sepals: stamens 5 to 10. Including S. subulata, Torr. & Gray, of 

 Gray's Manual, where the species is credited to Wimmer. Rocky Mountains 

 and eastward. 



2. S. LinnSJi, Presl. Densely matted and decumbent, an inch or two high : 

 leaves somewhat fascicled, pungent : flowers on long pedicels, at length nodding : 



>JT sepals exceeding the petals: stamens 10. Spergula saginoides, L. From New 

 Mexico to Arctic America. 



3. S. nivalis, Lindb. Cespitose, stems very short, scarcely % inch high: 

 leaves mucronate : peduncles short, strict : sepals with membranous margins, 

 scarcely equalling the petals. Uinta Mountains, Watson. 



