ERICACEAE. 143 



oblong-linear, curved, nearly or quite distinct petals. Sta- 

 mens 10, as long as the rose-coloured corolla. Leaves alter- 

 nate, oblong, somewhat pubescent. Shrub. Bogs and 

 damp barrens, from Montreal eastward. 



13. PY'ROLA, Tourn. WINTERGREEN. SHIN-LEAF. 



* Style straight, narrower than the 5-rayed stigma. 



1. P. mi' nor, L. Leaves roundish, slightly crenulate, 

 thickish, usually longer than the margined petiole. Raceme 

 not one-sided. Flowers white or rose-colour. Style short and 

 included in corolla. Cold woods, Atl. Prov. and north- 

 ward. 



2. P. seeun'da, L. Easily recognized by the flowers of 

 the dense raceme being all turned to one side. Leaves ovate. 

 Style long, protruding. Rich woods. Var. pu'Hlila has 

 orbicular leaves, and is 3-8 -flowered. Peat -bogs and 

 swamps. 



* * Style declined, the apex curved, upward. Stigma narrower than the 

 ring-like apex of the sty*e. 



3. P. rotundifO'lia, L. Leaves orbicular, thick, shining, 

 usually shorter than the petiole. Calyx-lobes lanceolate. 

 Flowers white, or in var. inearna'ta rose-purple. Moist 

 woods. 



Var. asarifo'lia, Hook., has round- reniform leaves, and 

 mostly rose-coloured petals. 



Var. uliglno'sa, Gray, has broadly ovate calyx-lobes, 

 mostly obovate dull leaves, and flesh-coloured petals. 



4. P. ellip'tiea, Nutt. (SHIN-LEAF.) Leaves elliptical, 

 thin, dull, usually longer than the margined petiole. Flowers 

 greenish-white. Rich woods. 



5. P. ehloran'tha, Swartz, has small roundish dull 

 leaves, converging greenish- white petals, and the anther-cells 

 contracted below the pore into a distinct neck or horn. Open 

 woods. 



14. MONE'SES, Salisb. ONE-FLOWERED PYROLA. 



M. uniflo'ra, Gr. (M. grandiflora, Salisb.) Leaves thin, 

 rounded, veiny, and serrate. Scape 2-4 inches high, bearing 

 a single white or rose-coloured flower. Deep woods. 



