SPECIES AND VARIETIES. 279 



narrow-bellshaped, pale bluish-purple ; capsule almost globu- 

 lar, opening in three valves between the calycine teeth. 

 Moist shady pastures and woods. Fl. July, August. Some- 

 times called Wahlenbergia. 



** Calyx tube and capsule long, narrow, prismatical. 

 C. hybrida : annual ; stems erect or decumbent, branched 

 at the base, 6-8 inches high, hairy ; leaves oblong, waved ; 

 flowers blue, sessile in the axils of the upper leaves, remark- 

 able for their long, narrow, triangular ovary and capsule, 

 crowned by the linear or oblong leafy segments of the calyx ; 

 capsule opening by short clefts close under the segments of 

 the calyx. A cornfield weed. Fl. July, August. Sometimes 

 called Specularia. 



(182) Oxycoccus. 



O. palustris : shrub ; stem creeping, wiry ; leaves small, 

 evergreen, ovate or lanceolate, the edges rolled back, glaucous 

 beneath ; flowers drooping, on long, slender peduncles ; the 

 corolla deeply divided into four lobes, which are turned back, 

 exposing the stamens; berry globular, red. Cranberry. 

 Peat-bogs. Fl. June, July. 



(183) Erica. HEATH. 

 * Corolla snorter tlian the calyx. 



B. vulgaris: shrub; stems tufted, about a foot high; 

 leaves small, short, opposite, linear, rigid ; flowers small, 

 purplish-pink or white, on short pedicels along the upper 

 branches, forming irregular, leafy racemes ; calyx coloured like 

 the corolla, which is concealed by it, and is deeply four-lobed. 

 Ling. Dry heaths; abundant. FL June, July. Now 

 generally separated under the name of Calluna. 



