260 ER1CACEJE. (HEATH FA3HLY.) 



2. P. elliptica, Nutt. (Shin-Leaf.) Leaves thin and dull, elliptical or 

 obovate-oial, usually longer than the margined petiole ; raceme many-flowered ; calyx- 

 lobes ovate, acute, not one fourth the length of the obovate rather spreading (green- 

 ish-white) petals; anther-cells scarcely pointed at the apex. — Rich woods, 

 New England to Pennsylvania, Wisconsin, and northward ; common. June. 

 — Scape and flowers nearly as large as in No. 1. 



3. P. clllorantha, Swartz. (Small Pyrola.) Lea ves small (V long), 

 roundish, thick, dull, shorter than the petiole; scape few-floivered, naked (5' -8' high), 

 calyx-lobes roundish-ovate, very short ; the elliptical petals converging (greenish- 

 white) ; anther-cells pointed; style strongly deflexed, scarcely exserted. (P. 

 asarifolia, Bigel., #-c.) — Open woods, New England to Pennsylvania, and north- 

 ward. June. (Eu.) 



# * Stamens and style straight : stigmas thick, united with the expanded ring : i. e. 



stigma peltate, 5-rayed. 



4. P. sectmda, L. (One-sided Pyrola.) Leaves ovate, thin, longer 

 than the petiole, scattered, finely serrate; racemes dense and spike-like, with the 

 numerous small (greenish-white) flowers all turned to one side; calyx-lobes ovate, 

 very much shorter than the oblong and erect petals ; style long and exserted. — 

 Rich woods ; common eastward and northward. July, Aug. — Scape 3' - 6' 

 high. (Eu.) 



5. P. minor, L. (Lesser Pyrola.) Leaves roundish, slightly crenu- 

 late, thickish, mostly longer than the margined petiole ; raceme spiked ; calyx- 

 lobes triangular-ovate, very much shorter than the nearly globose corolla ; style 

 short aiul included. — Woods, at the base of the White Mountains, New Hamp- 

 shire. July, Aug. — Scape 5' -10' high. Flowers small, crowded, white or 

 rose-color. (Eu.) 



23. MOJfESES, Salisb. One-flowered Pyrola. 



Petals 5, widely spreading, orbicular. Stamens 10 : filaments awl-shaped, 

 naked : anthers as in Pyrola, but conspicuously 2-horned at the apex, 2-cclled. 

 Style straight, exserted : the 5 stigmas long and radiating. Valves of the pod 

 naked. Otherwise as in Pyrola. — A small perennial, with the rounded and 

 veiny serrate thin leaves clustered at the ascending apex of creeping subterra- 

 nean shoots ; the 1 - 2-bracted scape bearing a single terminal flower. Parts of 

 the flower sometimes in fours. (Name p.6vos, single, and rjo-is, desire, probably 

 in allusion to the handsome solitary flower.) 



1. M. uniflora. (Pyrola uniflora, L.) — Deep cold woods, Pennsyl- 

 vania to Maine, Lake Superior, and northward. June. — Plant 2' -4' high, 

 smooth; the corolla ^' broad, white or slightly rose-color. (Eu.) 



24. CHI1APIULA, Pursh. Pipsissewa. 



Petals 5, concave, orbicular, widely spreading. Stamens 10 : filaments en- 

 larged and hairy in the middle : anthers as in Pyrola, but nearly 2-celled, some- 

 what 2-horned at the apex. Style very short, inversely conical, nearly immersed 

 in the depressed summit of the globular ovary : stigma broad and orbicular, 



