170 MONOTROPACEAE (INDIAN I'IPE FAMILY) 



E. Calyx lobes obtuse; flowers greenish; leaves orbicular or nearly so. W. C. E. 



P. chlorantha (green wintergreen) 

 EE. Calyx lobes acute; flowers white; leaves broadly oyate to spatulate-oblong. 

 W. C. E. P- picta (variable wintergreen) 



DD. Flowers red or pink. 



F. Leaves thin, dull, obtuse. W. C. E. 



P. incarnata (round-leaved wintergreen) 

 FF. Leaves coriaceous, shining, acute. W. C. E. 



P. bracteata (pear-leaved wintergreen) 

 CC. Style straight. 

 G. Leaves ovate; raceme i-sided; style equaling or exceeding the petals. W. C. E. 



P. secunda (i-sided wintergreen) 

 GG. Leaves orbicular: raceme not i -sided; style shorter than the petals. W. C. E. 



P. minor (small wintergreen) 



MONOTROPACEAE (Indian Pipe Family) 



Herbs, leafless, fleshy, white to red or brown, without green. 

 Flowers either terminal and solitary, or else in a terminal spicate or 

 racemose or headlike cluster. Flowers regular, perfect. Sepals 2-6. 

 Petals 3-6, rarely none. Stamens 6-12, hypogynous; anthers opening 

 by slits (except Sarcodes). Ovary superior, 4-6-lobed, i-6-celled. 

 Fruit a capsule, loculicidal, 2-6-valved. Seeds many, minute. 



A. Corolla none; flowers spicate. W. C. E. — (Gk. alios = another, tropa = a 

 turn; because there are many reflexed flowers.) AUotropa virgata 



AA. Corolla of distinct petals; flowers solitary or racemose. 

 B. Ovary 3-5-celled; disk io-12-toothed. 

 C. Stems i-flowered; plant pure white; bracts entire. W. C. E. — (Gk. 

 monos = I, tropa = a turn; referring to the single reflexed flower.) 



Monotropa uniflora (INDIAN pipe) 

 CC. Stems 3-20-flowered; plant yellowish or reddish; bracts erose to fimbriate. 



HYPOPITYS (p. 171) 



BB. Ovary i-celled; disk inconspicuous or none; bracts laciniate-toothed or 



fimbriate. PLEURICOSPORA (p. 171) 



AAA. Corolla of united petals; flowers racemose or spicate or capitate. 



D. Flowers in a raceme or spike; sepals s; ovary 5-celled, none of these centrally 



placed. 



E. Plant 3-g dm. high; flowers rather distant, in a long and not densely scaly 

 raceme; corolla globose ovate; corolla lobes recurved; anthers 2-awned on 

 the back. W. C. E. — (Gk. pleron = a wing, spora = a seed; the seeds are 

 winged.) Pterospora andromedea (pinedrops) 



EE. Plant 1.5-3 dm. high; flowers in a short densely scaly raceme or spike; 

 corolla campanulate; corolla lobes erect; anthers not awned. U. C. — (Gk. 

 sarkos = flesh, eidos = like; the plant is fleshy.) 



Sarcodes sanguinea (snow plant) 

 DD. Flowers in a headlike cluster; sepals 2, bractlike; ovary i-celled, but 

 apparently of i cell with 4 others surrounding it. W. C. — (Gk. hemi = half, 

 tomos = a cutting; probably because the calyx is split into 2 sepals.) 



Hemitomes congestum (cone plant) 



