Txwan-Ph'e Family. 103 



5-parted, white or pink. Stamens as many or twice as many as the lobes 

 of the corolla, hypogynous; anthers 2-celled, opening by terminal pores, 

 frequently appendaged; pollen composed of four united grains. Ovary 

 superior, 4-5-celled; style often declined; stigma 5-lobed or 5-crenate. 

 Capsule many-seeded. 



Pykola. Leaves basal : flowers racemose. 



Ohimaphila. Stem decumbent; branches erect, leafy; flowers corymbose. 



PYROLA L. Calyx 5-parted, free from the ovary. Petals 5, equal, decidu- 

 ous. Stamens 10; anthers large, more or less 4-eelled, inverted, hanging 

 apparently by the apex, opening above by two pores. Style thick; stigma 5- 

 lobed. Capsule 5-celled, many-seeded. 



P. elliptica Nutt. Shin-leaf. Steraless; leaves elliptical to oval, thin, 

 obscurely wavy-crenate, petioles margined; flowers white, many, nodding: 

 calyx minute, lobes ovate; petals oblong, obtuse, much longer than the 

 calyx; style declined and curved. Rich woods; June-August; frequent 

 locally; Winneshiek, Allamakee, Muscatine, and Johnson couuties; reported 

 from layette county. 



P. secunda L. Stem 3-8 inches high; leaves below, petioled. broadly 

 ovate, sub-serrate; flowers in a spicate raceme, turned to one side; calyx- 

 lobes ovate; corolla oblong, whitish; style exserted. Woods; June-July; 

 local; Winneshiek county. 



CHJlMAPtilLA Pursh. Low perennial herbs, with decumbent stems, 

 ascending branches, opposite or vertieillate leaves, and white or purplish 

 flowers. Calyx 5 cleft or 5-parted. Petals 5, orbicular, concave, spreading. 

 Stamens 10; filaments pubescent or hairy; anthers as in Pyrola. 2-horned. 

 Ovary 5-lobed, 5-celled; stigma orbicular, 5-crenate. Capsule 5-lobed, 5-celled, 

 5-valved; seeds numerous, small. 



C. umbellate! (L.) Nutt. Branches 4-12 inches high, leafy; leaves spatu- 

 late or cuneate-oblanceolate, obtuse or acutish, sharply serrate, evergreen, 

 not mottled: flowers subcorymbose or umbellate. Woods: June-August; re- 

 ported from Winneshiek and Fayette counties. 



MONOTROPACEAE Limit. Indian-Pipe Family- . 



Fleshy saprophytic herbs, with bracted scapes, and solitary or clust- 

 ered regular perfect flowers. Sepals 2-5. bract-like, deciduous. Petals 

 4 5, edges connivent. Stamens 8-10; anthers kidney-shaped, 2-celled, 

 becoming 1-celled. opening across the apex. Stigma flattened, about 5- 

 rayed. Capsule grooved, 4 5-celled. Represented in our flora by the 

 genus Moxotropa L. 



M. uniflora L. hulimi Pipe. Cori>ftc-plaiit. Scape 4-1(1 inches high, clus- 

 tered; roots matted, brittle: leaves represented by scale-like bracts, ovate- 

 lanceolate, sessile; flower terminal, solitary, nodding; capsule erect. Whole 

 plant waxy-white, sometimes pink or red, glabrous, turning black in drying. 

 Kich woods; June-August; infrequent; Jones and Johnson counties; reported 

 from Fayette, Floyd, Muscatine, Story, and Woodbury counties. 

 VACCINIACEAE LI mil. Huckleberry Family. 



Ours small shrubs, with scaly buds, alternate simple leaves, and small 

 perfect flowers in clusters or solitary. Calyx-tube adherent to the ovary, 

 the limb 4 5-lobed or 4-5-cleft. Corolla 4-5-lobed. Stamens 8 or 10; 



