1 86 PYROLACEAE. 



270. PTEROSPORA. 



Stout simple purplish-brown clammy-pubescent root-parasitic 

 herbs without chlorophyll ; stem wand-like, with scattered lanceo- 

 late scales toward the base, in place of leaves; flowers many, 

 nodding, white, in a long bracted raceme; corolla gamopetalous, 

 ovate, urn-shaped, 5-toothed; stamens 10; anthers 2-celled, 

 awned on the back; stigma 5-lobed; capsule globose, flattened, 

 5-lobed, 5-celled; seeds very numerous. 



Pterospora andromedea Nutt. A reddish purple glandular-hairy herb, 

 with straight simple flowering stems, 30-90 cm. high; roots coral-like, much 

 branched; scale-like leaves brownish, scarious, attenuate-lanceolate, largest 

 and most numerous below, 1-3 cm. long; raceme elongated, the flowers nodding, 

 on pedicels 1-2 cm. long, bracts small, narrow; flowers white or pinkish, 4r-5 

 mm. broad; capsules flattened, globose, 1 cm. wide. Coniferous woods in 

 the mountains. The plants die after blooming. 



271. MONESES. 



Low perennial glabrous herbs; flowers solitary on a slender 

 scape, drooping, white or pink; petals 5, distinct, widely spread- 

 ing, orbicular; stamens 10; filaments not enlarged in the middle, 

 naked; anthers conspicuously 2 -horned; style exserted; stigma 

 large, peltate, with 5 short radiating lobes; ovary globose, 4-5- 

 celled; ovules numerous; capsule subglobose, 4-5-celled, 4-5- 

 valved; seeds numerous, minute. 



Moneses uniflora (L.) Gray. Rootstock very slender: stems erect, bearing 

 2-4 pairs or whorls of leaves ; leaves obovate or orbicular, obtuse, finely crenate 

 or dentate, 8-20 mm. long, narrowed at the base, with a shorter petiole; 

 scapes 5-12 cm. high, 1-flowered, usually bearing a solitary bract; flowers 

 white, nodding, 12-20 ram. broad; capsules erect, 6-8 mm. broad. Coniferous 

 woods, in the mountains, rare. 



272. CHIMAPHILA. Pipsissewa. 



Low nearly herbaceous perennials ; leaves irregularly opposite, 

 whorled or scattered, coriaceous, short-petioled, serrate; flowers 

 in corymbs on a leafy stem ; petals 5, widely spreading, orbicular; 

 anthers 2-horned; stigma large, peltate, with 5 narrow and con- 

 spicuous radiating lobes; valves of the capsule naked. 



Flowers many; leaves cuneate-oblanceolate, numerous. C. umbellata. 



Flowers few; leaves ovate or oblong-lanceolate, few. C. menziesii. 



Chimaphila umbellata (L.) Nutt. Stems 15-30 cm. high, erect from 

 horizontal rootstocks; leaves evergreen, leathery, cuneate-oblanceolate, acute, 

 serrate, 2-4 cm. long, short-petioled, glabrous or minutely puberulent; flowers 

 4-8, pink, about 1 cm. broad, in terminal corymbs; filaments bearded on the 

 margins; capsule 6-8 mm, broad. Deep coniferous woods, in the mountains. 



Chimaphila menziesii (R. Br.) Spreng. Stems 10-15 cm. high; leaves few, 

 ovate or oblong-lanceolate, acute at each end, serrulate, 1-2.5 cm. long, the 

 principal veins bordered with white; peduncle 1-3-flowered; petals white or 

 pinkish; bracts ovate or orbicular; filaments expanded and hairy in the middle. 

 In deep coniferous woods. 



