270 PYROLACEAE. 



1. PYROLA L. WiNTERGREEN. 



Low glabrous perennial herbs, acaulescent or nearly 

 so, stoloniferous. Leaves basal and persistent, in one 

 species wanting. Flowers nodding, in a simple raceme 

 terminating bracted scapes. Calyx 5-parted, persistent. 

 Petals 5, deciduous. Stamens 10, declined or straight 

 and connivent; anthers reversed at flowering time, 

 each sac opening by a basal (apparently apical) pore. 

 Ovary 5-celled; style straight or declined; stigma 5- 

 lobed. Capsule globose, 5-lobed, loculicidally 5-valved. 



Leaves wanting. 1. P. aphylla. 



Leaves present. 2, P. pallida. 



1. P. aphylla Smith. Scapes leafless, 2-3 dm. high, arising 

 from a long deep scaly-bracted rootstock; raceme loosely many- 

 flowered; calyx-lobes ovate, acute, 4 mm. long, reddish; petals 

 whitish, obovate, about 15 mm. long. 



A Pacific Coast species, extending from the Cuyamaca Mountains 

 to British Columbia. Not yet found in the San Gabriel Mountains. 



2. P. pallida Greene. Scapes about 2 dm. high; leaves pale 

 glaucous green, not mottled, obovate and obtuse to almost elliptic, 

 subcoriaceous, with a narrow entire callous margin; petals greenish, 

 narrowly obovate, 6-8 mm. long. 



Immature specimens of what seems to be this species were col- 

 lected by the author in Swartout Canyon, San Gabriel Mountains. 

 These diff^er from the northern plants in the larger calyx-lobes and 

 more rounded leaves. 



2. CHIMAPHILA Pursh. 



Perennial herbs with decumbent stems, ascending 

 leafy branches, opposite or verticillate evergreen short- 

 petioled serrate leaves, and spreading or nodding white 

 or purplish flowers in terminal corymbs or rarely soli- 

 tary. Pedicels mostly bracteolate. Calyx 5-cleft or 

 5-parted, persistent. Petals 5, concave, nearly orbicular, 

 sessile, spreading or recurved. Stamens 10, the fila- 

 ments usually dilated above and somewhat pubescent. 

 Ovary globose, 5-lobed, 5-celled; styles very short, ob- 

 conic; stigma large, orbicular, 5-crenate. 



1. C. menziesii Spreng. More or less branched from the base, 

 1-2 dm. high; leaves ovate to oblong-lanceolate, 12-36 mm. long, 

 sharply serrulate, the upper surface often mottled with white; 

 peduncle 1-3-flowered; bracts ovate or roundish; filaments slender, 

 with a round dilated portion above the middle, villous; flowers about 

 1 cm. in diameter. 



Mount Wilson under pines. Frequent in the San Antonio, San 

 Bernardino and Cuyamaca Mountains. 



