ERICACEAE. (HEATH FAMILY.) 303 



and northward. July, Aug. — Scape 5' -10' high. Flowers small, crowded, 

 white or rose-color. (Eu.) 



24. MONESES, Salisb. One-flowered Pyrola. 



Petals 5, widely spreading, orbicular. FUaments awl-shaped, naked : anthers 

 as in Pyrola, but conspicuously 2-horned. Style straight, exserted : stigma 

 large, peltate, with 5 narrow and conspicuous radiating lobes. Valves of the 

 pod naked, as in the next genus. (Parts of the flower occasionally in (ours.) 

 Scape 1 -flowered. Otherwise as in Pyrola: intermediate between it and Chima- 

 phila. (Name formed of p6vds, single, and fjvis, delight, from the pretty and 

 solitary flower.) 



1 . M. unifibra. (Pyrola uniflora, L.) — Deep cold woods, from Penn. and &JL 

 New England northward. June. — A small perennial, with the rounded and 

 veiny serrate thin leaves (6" -9" long), clustered at the ascending apex of creep- 

 ing subterranean shoots; the 1 -2-bracted scape (2' -4' high) bearing a white 

 or rose-colored terminal flower 6" wide. (Eu.) 



25. CHIMAPHILA, Pursh. Pipsissewa. 



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

 larged and hairy in the middle : anthers as in Pyrola, but more or less conspic- 

 uously 2-horned. Style very short, inversely conical, nearly immersed in the 

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

 shaped, the border 5-crenate. Pod, &c. as in Pyrola, but splitting from the 

 apex downwards, the edges of the valves not woolly. — Low, nearly herbaceous 

 plants, with long running underground shoots, and evergreen thick and shining 

 leaves, somewhat whorled or scattered along the short ascending stems : the 

 fragrant (white or purplish) flowers corymbed or umbelled on a terminal pe- 

 duncle. (Name from x f V a > winter, and (pi\ta>, to love, in allusion to one of the 

 popular names, viz. Winlergreen.) 



1. C. umbellata, Nutt. (Prince's Pine. Pipsissewa.) Leaves wedge- 

 lanceolate, acute at the base, sharply serrate, not spotted ; peduncles 4 - 7-flowered. 

 — Dry woods : common. June. — Plant 4'- 10' high, leafy : petals flesh-color :• 

 anthers violet. (Eu.) 



2. C. maculata, Pursh. (Spotted Wintergreen.) Leaves ovate-lan- 

 ceolate, obtuse at the base, remotely toothed, the upper surface variegated with white ; 

 peduncles 1 - 5-flowered. — Dry woods: most common in the Middle States. 

 June, July. —Plant 3' -6' high. 



26. PTEROSPOEA, Nutt. Pine-drops. 



Calyx 5-parted. Corolla ovate, urn-shaped, 5-toothed, persistent. Stamens 

 10 : anthers 2-celled, awned on the back, opening lengthwise. Style short : 

 stigma 5-lobed. Pod globose, depressed, 5-lobed, 5-celled, loculicidal, but the 

 valves cohering with the columella. Seeds very numerous, ovoid, tapering to 

 each end, the apex expanded into a broad reticulated wing many times larger 

 than the body of the seed. — A stout and simple purplish-brown clammy-pubes- 



