ROBINSON. — ALSINEiE. 289 



revolute. — Spec. i. 422 ; Reichb. Icon. Fl. Germ. v. t. 223. — Found 

 more or less established at Train's Meadow Road, Long Island, Ruger ; 

 Poland, Maine, Miss Furbish. (Adv. from Europe.) 



+- +- Glandular-pubescent. 



S. dichotoma, L. Stems terete, profusely and dicbotomously 

 branched : leaves ovate to ovate-lanceolate, acute or acutish, cordate, 

 spreading, 6-12 lines in length: peduncles 1-flowered, springing from 

 the forks of the branches, considerably exceeding the leaves, com- 

 monly detlexed in fruit: sepals lanceolate, acute, usually about equal- 

 ling the petals. — Spec. 603 ; Fenzl in Ledeb. Fl. Ross. i. 378. — An 

 Asiatic species of great variability. 



Var. Americana, Porter, in litt. Leaves oval, obtusish : sepals 

 oblong, obtuse, but 1^ lines long, considerably exceeded by the rather 

 narrow white petals. — Collected near Virginia City, Montana, 1871, by 

 W. B. Piatt on the Hayden Survey, and sent to the Gray Herbarium 

 by Prof. T. C. Porter. A portion of the same material has been 

 kindly examined by Messrs. Batalin, Korshinsky, and Lipsky, who 

 pronounce it a variety or form of S. dichotoma, near var. cordifolia, 

 Bunge, but with more obtuse leaves and sepals. 



S. Jamesii, Torr. Viscid above: stem strongly angled: leaves 

 elongated, lanceolate, attenuate, smooth, 2-4 inches in length, 3-8 

 lines broad near the closely sessile base : flowers in a leafy terminal 

 panicle: sepals oblong, herbaceous, 2 lines in length. — Ann. Lye. 

 N. Y. ii. 169 (as S. Jamesiana) ; Pacif. R. Rep. iv. 69; Torr. & 

 Gray, Fl. i. 183 ; Wats. Bot. King Exp. 38. ?S. graminea, James, 

 Cat. 181. — Woodlands and " creek bottoms," Rocky Mts. of Colorado, 

 New Mexico, and Arizona to Northern California and Washington, 

 Brandegee. 



S. Nuttallii, Torr. & Gray. Annual, a span high : leaves 

 linear-oblong, obtusish ; the upper much reduced but not scarious : 

 flowers in dichotomous racemes; pedicels horizontally spreading, 9 

 lines in length: corolla 6-8 lines broad. — Fl. i. 183; Fielding, Sert. 

 PI. t. 18. Alsine Drummondii, Fenzl ex Torr. & Gray, 1. c. i. 675. 

 Alsine Nuttallii, Gray, Gen. ii. 34. — Arkansas, Nut t all ; Louisiana, 

 Hale; Central Texas, Wright, Lindheimer, Drummond, Hall, etc. 



11. ARENARIA, L. Sandwort. {Arena, sand, a sandy 

 place, from the habitat of several species.) — A composite genus, and, 

 when taken as here in its more comprehensive sense, the largest of 

 the Alsinem. Plants of wide distribution both as regards latitude and 

 altitude, and possessing in consequence much variability in aspect; 

 being either slender annuals or herbaceous perennials of the habit of 

 vol. xxix. (n*. s. xxi.) 19 



