STANDLEY FLORA OF GLACIER PARK. 389 



Flowers white or greenish white; leaves mostly 1.5 to 3 cm. long. 



Leaves rounded, dark green; petals about 7 mm. long; racemes not 1-sided. 



5. P. chlorantha. 



Leaves oval or ovate, usually acutish, rather pale green; petals about 4 mm. 



long; racemes 1-sided 6. P. secunda. 



1. Pyrola minor L. Small pyrola. Rare; at low, middle, or high altitudes, in 

 swampy woods or on moist banks. Alaska to Calif., Colo., Conn., and Greenl.; also 

 in Eur. and Asia. (Erxlebena minor Rydb.)— Leaves rounded, 1 to 3 cm. long, 

 petioled, crenulate; petals 4 to 5 mm. long, white or pink. 



2. Pyrola picta Smith. Spotted pyrola. Deep moist woods near Sun Camp. 

 B. C. to Calif., Colo., and Mont. — Leaves oval or broadly ovate, often acutish, 2 to 6 

 cm. long, pale beneath; petals 6 mm. long, greenish or purplish. 



3. Pjrrola bracteata Hook. Wet woods below Lake McDermott; occasional on the 

 west slope at low and middle altitudes, in deep woods. Alaska to Oreg. and Mont.— 

 Leaves broadly ovate or rounded, 3 to 8 cm. long, dark green, shining; petals 7 to 9 

 mm. long. 



Perhaps only a form of P. asarifolia. 



4. Pyrola asarifolia Michx. Pink pyrola. Common at low or rarely at middle 

 altitudes, in bogs or moist woods or thickets. B. C. to Calif., N. Mex., Minn., N. Y., 

 and N. S. (P. uliginosa Terr.) — Leaves 3 to 8 cm. long, rounded, often broader than 

 long, green or dark green, usually shining, long-petioled ; petals 5 to 7 mm. long, pale 

 or deep pink. 



This is very abundant in some localities. The flov.*ers last onlj- a short time. 



5. Pyrola chlorantha Swartz. Occasional at almost all altitudes, in deep woods, or 

 under bushes about timber line. B. C. to Calif., Md., and Lab.; also in Eur.— 

 Leaves long-petioled, dull, 1 to 4 cm. wide. 



6. Pyrola secunda L. Common at nearly all altitudes, in moist woods or thickets, 

 often on banks or under bushes above timber line. Alaska to Calif., Va., and Lab.; 

 also in Eur. and Asia. {Ramischia secunda Garcke.) — Plants 10 to 20 cm. high, often 

 forming dense colonies; leaves 2 to 4 cm. long, finely toothed; flowers usually 

 numerous. 



64. MONOTROPACEAE. Indian-pipe Family. 



The plants of this family are saprophytes (plants which live on decayed vegetable 

 or animal matter), or parasites upon the roots of other plants; they have no green 

 coloring matter (chlorophyll). The leaves are reduced to scales; the petals are dis- 

 tinct or united at the base; the fruit is a capsule. 



Plants glabrous; flower one on each stem 1. MONOTROPA. 



Plants hairy; flowers several or many. 



Corolla of united petals; plants 20 to 100 cm. high, with hard stems; flowers 

 numerous 2. PTEROSPORA. 



Corolla of distinct petals; plants mostly 10 to 20 cm. high, with succulent stems; 

 flowers few 3. HYPOPITYS. 



1. MONOTROPA L. 



1. Monotropa uniflora L. Indian-pipe. Occasional at low altitudes on the west 

 slope, in deep moist woods; probably also on the east slope. Widely distributed in 

 N. Amer. and in Asia.— Plants 10 to 30 cm. high, usually growing in small clumps, 

 white or pink; flower drooping, 1.5 to 2 cm. long. 



A curious plant of striking appearance; sometimes known as ghost-plant or corpse- 

 plant. The simple stem with the recurved flower suggests a pipe, hence the common 

 name. The plants turn black after flowering. Although the flower is curved down- 

 ward, the seed pod is held erect. 



