260 ERICACEAE. (HEATH FAMILY.) 



2. P. elliptica, Nutt. (SHIN-LEAF.) Leaves thin and dull, elliptical or 

 Rotate-oval, usually longer than the margined petiole ; raceme many-flowered ; ca/yx- 

 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. 

 Scupe and flowers nearly as large as in No. 1. 



3. P. chlorailtha, Swartz. (SMALL PYROLA.) Leaves smatt (!' long), 

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

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

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

 asarifulia, Biyel., Sfc.) Open woods, New England to Pennsylvania, and north- 

 ward. June. (Eu.) 



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

 stigma peltate, 5-rayed. 



4. P. seciinda, 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) fiowers att 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 7 

 high. (Eu.) 



5. P. minor, L. (LESSER PYROLA.) Leaves roundish, slightly crcnu- 

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

 lobes triangular-ovate, very much shorter than the nearly glol>ose corolla ; style 

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

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

 rose-color. (Eu.) 



23. MONESES, 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 sen-ate thin leaves clustered at the ascending apex of creeping subterra- 

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

 the flower sometimes in fours. (Name povos, single, and fjo~is, desire, probably 

 in allusion to the handsome solitary flower.) 



1. 91. HUB flora. (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. C II I 31 A PHI LA, Pursh. PIPSISSEWA. 



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

 largcd and hairy in the middle : anthers as in Pyrola, but nearly 2-cellcd, some- 

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

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



