Class X. Order II I. 179 



MITELLA PROSTRATA. MX. 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, reniform and heart shaped, 

 doubly crenate as in Hydrocotyle Americana. Scape filiform, 

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

 pinnatifid. In Barrc, Vermont. Sent by Dr. Paddock. June. 



184. SAPONARIA. 



SAPONARIA OFFICINALIS. L. Soap Wort. 



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. 



185. 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 onesspatulate. 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. 



TRIGJNU. 



18G. ARENARIA. 

 ARENARIA RUBRA. L. Common Sandwort. 



Leaves linear, slightly mucronate, stipules membra- 

 nous, sheathing ; seeds compressed, angular, roughish. 

 Sm. 



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

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

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



