288 PROCEEDINGS OP THE AMERICAN ACADEMY. 



base, acute or acuminate, about au inch in length, with definite intra- 

 marofinal veins : flowers rather numerous in the forks of the branches ; 

 peduncles becoming horizontal or reflexed : sepals 2^ lines long, acute: 

 petals of nearly equal length, cleft almost to the base : capsule some- 

 what shorter. — Pacif. R. Rep. iv. 69; Brew. & Wats. Bot. Calif. 

 i. 68. — Coast of Marin Co., Calif. ; Punta de los Reyes, Bigelow ; 

 Dillon's Beach, Congdon. In habit much resembling the Old World 

 S. dichotoma, L., of which it may well prove a form. It differs, bow- 

 ever, in its much more deeply cleft petals. 



S. pubera, Michx. (Great Chicioveed.) Perennial, decum- 

 bent, stout for the genus : stems pubescent in lines : leaves elliptic- 

 oblong, finely ciliate, acute or obtusish, |— 1 \ inches long, or on the late 

 tall and mostly sterile shoots 3 inches in length : calyx nearly or quite 

 smooth ; sepals 3-4^ lines in length : stamens 10 : capsule globose, not 

 exceeding the calyx. — Fl. i. 273 ; Darlingt. Fl. Cest. 274 ; Torr. & 

 Gray, Fl. i. 183. — Rocky woods, Pennsylvania to Georgia, westward 

 to Tennessee, Kentucky, and Indiana. Professor Britton calls atten- 

 tion to the fact that the teeth of the capsule become circinate-revolute, 

 as in Cerastium § Strephodon. Miss E. F. Andrews states that the 

 petals are sometimes cleft half their length, in other cases nearly to 

 the base, which is confirmed by specimens. 



* * Petals retuse or shortly bifid, divided but \-\ the way to the base, com- 

 monly considerably exceeding the calyx : species approaching Armaria. . 



-i- Glabrous or nearly so. 



S. unifiora, Walt. Weak and slender : stems decumbent or 

 suberect, a foot in length : leaves linear, acute, or the lower lanceolate, 

 gradually narrowed below, mucronate, 8-12 lines in length ; the floral 

 much reduced : flowers few, solitary, on elongated slender peduncles : 

 calyx soft in texture; sepals scarcely veined. — Car. 141 ; Torr. & 

 Gray, Fl. i. 184; Chapm. Fl. 50. Arenaria glabra, Ell. Sk. i. 520, 

 not Michx. ; Wood, Bot. & Fl. 56. Alsine Walteri, Gray, Gen. ii. 34. 

 — Moist meadows, North Carolina to Florida and Alabama, Winchell ; 

 March to May. 



S. macropetala, Torr. & Gray, appears to be only a form of 

 Arenaria patida, Michx., a species in which the petals vary from 

 entire to retuse or even bifid. 



S. Holostea, L. Stem sharply 4-angled, 6-18 inches high : leaves 

 narrowly lanceolate, spreading, long-attenuate from near the rounded 

 sessile base, often ciliated, 1^-3 inches in length, 1-nerved: sepals 

 lance-oblong, thin, nerveless, 4 lines in length, exceeded by the large 

 white petals : styles 3 : valves of the capsule at length circinate- 



