260 ERICACEAE. (HEATH FAMILY.) 



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

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

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

 ish-white) p< tuls; anther-cells scarcely pointed at the apex. Rich woods, 

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

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



3. P. chloriBiitlia, Swartz. (SMALL PYROLA.) Leaves small (I 1 long), 

 roundish, thick, dull, shorter than the petiole; scape few-jloirercd, 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, Biyel., $*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. 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) flowers all turned to one side; calyx-lobes ovate, 

 rery much shorter than the oblong and erect petals ; style long and cxserted. 

 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 gld)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, white or 

 rose-color. (Eu.) 



23. UIONESES, Salish. OKB-FLOWERED PYROLA. 



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

 naked : anthers as in Pyrola, but conspicuously 2-horncd at the apex, 2-celled. 

 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 J(m, desire, probably 

 in allusion to the handsome solitary flower.) 



1. JMI liniflora. (Pj'rola 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. CHI ITI A PHIL, A, 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-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, 



