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 PTROLA. 



Petals 5, widely spreading, orbicular. Filaments 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 fours.) 

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

 phila. (Name formed of />W, single, and fjvts, delight, from the pretty and 

 solitary flower.) 



1 . M. unifldra. (Pyrola uniflora, L.) Deep cold woods, from Penn. and 

 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 ^ei/ua, winter, and <iXeo>, to love, in allusion to one of the 

 popular names, viz. Winterqreen.) 



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. PTEROSPORA, 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- 



