636 PYROLACEAE 



Flowers solitary-; petals spreading; valves of the capsule not cobwebby on the margins. 



2. MONESES. 



Flowers racemose; petals more or less converging, concave; valves of the capsule 



cobwebby on the margins when opening. 

 Flowers without hj'pogynous disk; petals without tubercles. 



Style exserted, deflexed, curved; stigma narrower than the stj'le. 



3. Pyrola. 



style short, straight; stigma thicker than the style, peltate. 4. ErxlebeNIA. 

 Flowers with a 10-lobed hypogynous disk; petals with a pair of tubercles at the 

 base. 5. Ramischli. 



1. CHIMAFHILA Pursh. Pipsissewa, Prince's Pine. 



Perennial herbs, with more or less cespitose, horizontal rootstock and short 

 leafy steins. Leaves persistent, coriaceous, opposite or whorled, short-petioled 

 and serrate. Flowers perfect, in terminal corymbs. Sepals 5, persistent. Cor- 

 olla white or pink, wax-like; petals 5, broad, concave, sessile. Stamens 10; fila- 

 ments very short; anthers incurved; sacs opening by pores at the ends of the 

 basal ascending beaks. Ovary 5-ceIIed; stigma orbicular, peltate, barely 5- 

 crenate; style very short. Capsule 5-celled, the latter locuhcidal from the top; 

 valves not cobwebby on the margins; seeds many. 



Leaves lanceolate to ovate, broadast below the middle, usually pale-mottled along the 

 inidveins; dilated portion of the filaments hairy. 1. C Alenziesii. 



Leaves oblanceolate. broadest above the middle; dilated portion of the filaments hairy 

 only along the margins. 2. C. occidentalism 



1. C. Menziesii Spreng. Stem about 1 dm. high; leaves 2-5 cm. long, 

 serrulate, acute; pedimcles 1-3-flowered, 3-6 cm. long; bracts ovate or rotund; 

 sepals orbicular, crenulate; petals orbiculate, not ciliate; capsule globose, 6 mm. 

 in diameter. Woods: B.C. — Ida^r—Calif. Je-Jl. 



2. C/occidentalis ^Pydb^'mSns 1-2 dm. high, terete; leaves whorled; 

 blades 3-10 cm. long, oblanceolate, acute, sharj^ly serrate, dark green and shin- 

 ing above, pale beneath; peduncles 5-10 cm. long, corymbosely 4-7-flowered; 

 bracts narrow; sepals suborbicular or orbicular-ovate, 2 mm. long, rounded and 

 erose-ciliate; petals nearly orbicular, ciliate on the margin; capsule depressed- 

 globose, 5-6 mm. in diameter. C. umbeUala Am. Auth., in part, not Nutt. In 

 drj^ woods: Mont. — N.M. — Calif.— Alaska. Submont.—MonL Je-Au. 



2. MONESES Salisb. One-flowered Wintergreen, Single Beauty. 



Perennial herbs, scapose or short-stemmed, with slender rootstocks. Leaves 

 persistent, coriaceous, opposite or in 3's, short-petioled, crenate or serrate. 

 Flowers perfect, sohtary, on a long peduncle, nodding. Sepals 5 (rarely 4), 

 persistent. Petals white or rose-colored, 5 (rarely 4), orbicular or broadly ovate, 

 spreading. Stamens 10 or 8; filaments short, 'subulate, somewhat dilated, in- 

 curved. Ovary 4^5-celled; style straight; stigma peltate, with 4-5 narrow, at 

 first erect, at length radiating lobes. Capsule depressed-globose, 4-5-celled, 

 loculicidally 4-5-valved from the summit; valves not woolly on the edges. 



Leaf-bladas orbicular or obovate, crenate, usually rounded at the apex. 1. M. uniflora. 

 Leaf-blades ovate, strongly reticulate, serrate, usuaUy acute or acutlsh at the apex. 



2. M. reticulata. 



1. M. uniflora (L.) A. Gray. Stem 5-15 cm. high; leaves mostly crowded 

 near the base; blades 8-25 mm. long, acute or rounded at the base, thin; sepals 

 oval, obtuse, 3 mm. long, ciliolate; petals ovate to orbicular, obtuse, 8-12 mm. 

 long; capsule 6-8 mm. in diameter., In woods: Greenl.— Pa.— Colo.— Ore.— 

 Alaska; Eurasia. Mmi,—Suhalp.. Jc-Au. 



2. M.'):^eticulataCNutt.)^^fer^ cm. high; leaf-blades rounded-ovate, 

 1-2.5 cm. long, strongly veiny and coarsely toothed; sepals oval, ciliolate; petals 

 white, ovate, obtuse, about 1 cm. long; capsule about 1 cm. in diameter. Shady 

 woods: Wash. — Mont.— Alaska. Mont. 



3. PYROLA (Tourn.) L. Wintergreen. 



Scapose perennials, with slender, stoloniferous rootstocks. Leaves persistent, 



firm, subcoriaceous, mainly basal, or in one species usually none and replaced 



, by scales. Flowers racemose, nodding, perfect. Sepals 5, persistent, spreading. 



