CLASS X. ORDER III. 191 



narrow, ending in a short bristle. Stipules surrounding the stem, 

 •whitish, dry. Flower stalks and calyx hairy. Petals small, not 

 exceeding the calyx. — Pastures and road sides. — June, July. 

 Arenaria marina. Sm. Sea Sandwort. 



Leaves semicylindrical, fleshy, awnless ; stipules 

 scarions, sheathing ; seeds compressed, margin gla- 

 brous. Stn. 

 Syn. Arenaria Canadensis. Pers. 



A more succulent, fleshy plant than the last. Stems prostrate 

 or decumbent, smooth. Leaves short, fleshly, roundish, not end- 

 ing in a bristle. Flowers pale red, expanded as well as the last 

 in clear weather, and closed in foul. — Salt marshes. — July. — By 

 some this is considered a variety of the last. 

 Arenaria stricta. Mx. Straiglit Arenaria. 



Glabrous, erect, many stemmed; leaves linear subu- 

 late ; flowers panicled, calyx segments lance-ovate, 

 acute, striate, much shorter than the petals. 



Stems filiform, erect, jointed. Leaves linear, sessile, with a 

 tuft in each axil. Branches of the panicle opposite, bracted, 

 elongated. Calyx very acute, five nerved. Petals oblong, ob- 

 tuse, longer than the calyx. — On the borders of Lake Champlain ; 

 gathered by Mr. Boott. — Perennial. 

 Arenaria glabra. 2fZ. edit. Mountain Arenaria. 



Glabrous, with crowded filiform stems; leaves linear- 

 subulate, spreading, flat; pedicels elongated, one flow- 

 ered ; calyx leaves oval, obtuse, smooth. 

 Syn. Arenaria Grcenlandica. Spreng. 



This plant differs from the preceding in its smaller height, 

 fewer leaves, and obtuse smooth calyx. Stems crowded so as to 

 cover the ground with tufts of flowers, smooth, filiform. Leaves 

 shorter, and without the axillary tufts of the last species, con- 

 nate, linear, shining. Flowers large, white. Segments of the 

 calyx gibbous at base, ovate, obtuse. Petals twice as long as 

 the calyx emarginate, white. Stamens yellow. Germ ovate. 



