ROBINSON. — ALSINEiE. 287 



somewhat exceeding the calyx: seeds smooth. — Act. Hafn. x. 447, 

 t. 4, f. 14 ; Torr. & Gray, Fl. i. 184 ; Fenzl in Ledeh. Fl. Ross. i. 384. 

 S. marginata, Cham. & Schlecht. Linuaea, i. 50. Arenaria tJnjmi- 

 folia, Pursh, Fl. 317 ; Eaton & Wright, N. A. Bot. 132. A. Purshi- 

 ana, Seringe in DC. Prodr. i. 414 ; Hook. Fl. Bor.-Am. i. 102. — 

 Salt marshes and boggy slopes, Little Cranberry Island, Maine, Red- 

 field, and coast of Oregon, Howell Bros., northward to Alaska and 

 Arctic America. (Greenland ; N. Asia.) The commoner form, var. 

 OVALIFOLIA, Fenzl, 1. c, has leaves ovate or sub-orbicular, crowded, 

 but 1-3 lines in length ; var. oblongifolia, Fenzl, 1. c, has more 

 elongated internodes and oblong leaves, 4-5 lines long. 



S. obtusa, Engelm. Smooth: stems prostrate, 2-3 inches long: 

 leaves thin, ovate, acute, about 4 lines long, half as broad : flowers 

 solitary, appearing axillary : peduncles 3-4 lines long : sepals ovate, 

 obtuse, hardly at all scarious on the margins : petals none : capsule 

 \\-l ^ times as long as the calyx, obtuse ; seeds brown, uuder a com- 

 pound microscope covered with lighter colored oblong tubercles with 

 fringed edges. — Bot. Gaz. vii. 5 ; Macoun, Cat. Canad. PL 76. 

 S. humifusa, Macoun, Phsenog. & Cryptog. PI. of Canad. 9. — 

 Anthracite Creek, Colorado, 9,000-10,000 feet, Brandegee ; near 

 Macleod's Lake, Brit. Columbia, Macoun; Kootanie Pass, B. C., 

 Dawson; June, July. 



S. crispa, Cham. & Schlecht. Smooth, or more rarely pu- 

 bescent: stems numerous, weak, decumbent: leaves thin, ovate, acumi- 

 nate, commonly crisped on the edges : pedicels solitary, 3-6 lines long : 

 sepals lanceolate, acute, margined, 3-nerved, considerably exceeded by 

 the acutish capsule: petals minute or none. — Linnrea, i. 51 ; Hook. 

 Fl. Bor.-Am. i. 97 ; Torr. & Gray, Fl. i. 186, 675 ; Gray, Proc. Am. 

 Acad. viii. 378. S. borealis, var. crispa, Fenzl ex Torr. & Gray, Fl. i. 

 675 ; Torr. Bot. Wilkes Exp. 245. S. borealis, var. apetala, Regel, 

 Ost-Sib. i. 396 in part. — Mountainous regions of N. Calif, to Alaska. 



S. ruscifolia, Willd. Glabrous: leaves coriaceous, ovate, sub- 

 cordate, acuminate, somewhat rigid with pungent tip : flowers rather 

 large, terminal, pedunculate : sepals acute. — Willd. in herb. ace. to 

 Schlecht. Berl. Gesell. Nat. Fr., Mag. 1816, 194; Cham. & Schlecht. 

 1. c. i. 50; Regel, Ost-Sib. i. 419. (Siberia, Kamtschatka.) 



"Var. arctica, Regel, 1. c. i. 420. " Low stems, scarcely an inch 

 in length, sepals obtuse. — On the Melville Islands." 



= = Leaves broad, an inch or more in length. 



S. littoralis, Torr. Pubescent; stems decumbent, dichoto- 

 mously branched, 8 inches in height : leaves ovate, rounded at the 



