178 CARYOPHYLLACEiE. Arenaria. 



Upper Canada to the Arctic Sea and N. W. Coast— 2| Stem 2-6 inches 

 high. Petals and sepals 5. 

 -r- 7. 8. suhulata : glabrous or slightly pubescent ; leaves subulate, some- 

 ' what secund, mucronate ; peduncles elongated ; petals 5, as long as the 

 calyx ; stamens 5-10.— Spergula procumbens P. Linn. S. subulata, Swariz ; 

 Eng. bot. t. 1082 ; Hook. I. c. 

 Rocky Mountains, Drummond. 



5. ARENARIA. Linn.; Bartl. ord. nat. p. 305. 



Arenaria, excl. § Spergularia, DC. 



Sepals 5. Petals 5, entire. Stamens 10 (or by abortion fewer). Styles 

 3 rarely 2 or 4. Capsule 3-valved; valves usually 2-parted. Seeds nume- 

 rous, roundish, small.— Flowers terminal. 



§ 1. Flowers aggregated into heads or compact fascicles. 



-/'" 1. A. congesta (Nutt. ! mss.) : " ccespitose, glabrous ; leaves long, linear- 

 subulate, pungent ; flowers in roundish heads, with crowded membranous 

 bracts; sepals ovate, membranaceous, obscurely 3-nerved, about half the 

 length of the oblong petals. 



" Shady hills in the Rocky Mountain range, about Bear River of the Lake 

 of Timpanagos. — U Stem simple, a foot high. Lower leaves almost like 

 those of a Pme, very narrow and more than 2 inches long [margin ciliate- 

 scabrous]. Heads 1-3. Capsule coriaceous, about the length of the calyx. 

 Seeds very small, angular. — A remarkable species, with somewhat the habit 

 of Dianthus prolifer." Nutt. 



2. A. Franklinii (Douglas): branches erect, fastigiate, numerous, fragile ; 

 leaves smooth (minutely ciliate-scabrous below), subulate-setaceous ; flowers 

 fascicled ; sepals subulate, scarious, broadly 1-nerved, longer than the linear- 

 oblong (obtuse) petals. Hook. fl. Bor.-Am. 1. p. 101. t. 35. 



Oregon, from the great falls to the source of the Missouri, Douglas. — U 

 Branching from the base, a span high. Leaves an inch long. Fascicles of 

 flowers dense, crowded with bracts similar to the leaves. Hook. 



3. A. Hookeri (Nutt. ! mss.) : " caudex branched, csespitose ; stems (3 

 inches high) simple, fastigiate, pubescent ; leaves subulate-setaceous ; flow- 

 ers fascicled ; sepals lanceolate-subulate, 1-nerved, rather shorter than the ob- 

 long obtuse sepals. 



" Rocky Mountain range, on the summits of high hills (lat. 40°). — Bracts 

 and sepals membranaceous. — Nearly allied to A. Franklinii, but with shorter 

 leaves, bracts, and sepals." Nutt. 



§ 2. Flowers in loose dichotomous cymes., or solitary. 

 * Leaves gramineous. 



4. A. nardifoli a (hedeb.): csespitose; leaves fascicled, linear-setaceous, 

 very narrow, mucronate, glabrous ; stems erect, glabrous, 1-3-flowered ; 

 petals obovate, longer than the very obtuse ovate 5-nerved sepals. Hook. — 

 " Ledeb. Jl. Altai"; Hook. fl. Bor.-Am. 1. p. 98. t. 32. 



Shores of the Arctic Sea, Dr. Richardson. — 11 Leaves crowded below, 

 with a curved mucronation. Capsule broadly ovate. Hook. — Our specimen 

 of A. nardifolia from Altai, does not well agree with Hooker's figure and 

 description, but has acutish sepals, and the cusps of the leaves straight. 



