DECANDBJA MONOGYKIA. 93 



III. TRIGYNIA. 



136. ARENARIA. Capsule of 1 cell; petals undivided, spreading. 



135. STELLARIA. Capsule of 1 cell ; petals deeply cloven, spread, 

 ing. 



134. SILENE. Capsule of 3 incomplete cells ; petals with claws, 

 limb cloven ; calyx of 1 leaf. 



IV. PENTAGYNIA. 



137. SEDUM. Capsules 5, each with a scale at the base ; corolla 



of 5 petals. 



138. OXALIS. Capsule of 5 cells, angular ; seeds 2, tunicated ; 



petals connected at the base. 



139. LYCHNIS. Capsule of 5 cells, or of 1, with many seeds ; 



calyx tubular, membranous. 



140. AGROSTEMMA. Capsule of 1 cell ; calyx tubular, coriaceous. 



141. CERASTIUM. Capsule of 1 cell; calyx of 5 leaves; petals 



cloven. 



142. SPERGULA. Capsule of 1 cell ; calyx of 5 leaves ; petals un- 



divided. 



I. MONOGYNIA. 

 129. PYROLA. 



1. P. rotundifolia, cluster many-flowered ; calyx as long as 

 the stamens ; stamens ascending ; style twice as long, declining 

 and recurved. Round-leaved Winter-green. 



Hab. In the Dean below Allerton Mill, plentiful, about 

 midway between the mill and the lime road. July, 

 Aug. If 



