190 CLASS X. ORDER III. 



MiTELLA PROSTRATA. 3fx. Trailing Mitella. 



Root creeping ; stems prostrate • leaves alternate, 

 roundish cordate, subacute, with slight obtuse lobes. 



A small, delicate creeping species. Stems prostrate. Leaves 

 small, on slender hairy petioles, reniforrn and heart shaped, 

 doubly crenate as in Hijdrocolyle Armricana. Scape filiform, 

 hairy, with a thin raceme, of few flowers. Calyx acute. Petals 

 pinnatifid. — In Barre, Vermont. Sent by Dr. Paddock. — June. 



198. SAPONARIA. 



Saponaria officinalis. L. Soap tvorf. 



Calyxes cylindrical, leaves ovate-lanceolate. 



A foot or more high, with opposite leaves and numerous flow- 

 ers resembling pinks with entire petals. — Road sides, natural- 

 ized. — July, August. — Perennial. 



199. DIANTHUS. 



DiANTHus Armeria. L. Wild Pink, 



Flowers aggregate, fascicled ; scales of the calyx 

 lanceolate, villous, equal to the tube. Sm. 



This small species of pink has a leafy, pubescent stem, ending 

 in erect branches. Leaves opposite, linear-lanceolate, entire, 

 pubescent, the lower one spatulate. Flowers terminal, in bunch- 

 es, erect, scentless, ephemeral. Calyx equalling the tube of the 

 corolla ; petals small, red, with white dots, a little toothed. — ■ 

 On the rocky hills in Roxbury and Salem. — July. — Annual. 



TRIGYNIA. 



200. ARENARIA. 



Arenaria RUBRA. L. Common sandwort. 



Leaves linear, slightly rnucronate, stipules membra- 



noits, sheathing; seeds compressed, angular, roughish. 



A spreading plant, with small, delicate, red flowers. Stems 

 prostrate, slender, smooth, pointed, branching. Leaves small, 



