132 Flora of the Palonsc Region 



ed at base, sessile, entire, sparsely puberulent, 2-4 em. long: peduncle soli- 

 tary, 4-5 cm. long; involucral bracts 4-6, white, ovate, 8-16 mm. long: 

 flowers greenish, small, in dense heads: fruit bright-red, globular, 4 mm. in 

 diameter. Thatuna Hills, in rich woods. 



C. stolonifera Michx. Shrub, 1-3 m. high, with bright red twigs, these 

 usually puberulent when young: leaves opposite, entire, ovate or oval, acum- 

 inate or acute, cuneate at base, appressed-puberulent or glabrous, paler be- 

 neath, 4-8 cm. long; petiole 1-2 cm. long: cymes short-peduncled, 2-6 cm. 

 broad, usually puberulent: flowers white, 6-8 mm. broad: fruit globose, blue; 

 stone somewhat flattened, usually broader than long. Common along 

 streams. 



Family 57. ERICACEAE. 



Perennial herbs or shrubs: leaves simple, commonly alternate, 

 articulated to the stem, without stipules: flowers regular, or nearly 

 so: corolla generally gamopetalous, 4-5-lobed: stamens as many 

 or twice as many as the corolla lobes, hypogynous: style single: 

 ovary with as many cells as the corolla-lobes, or rarely less: seeds 

 small; endosperm fleshy. 



Calyx adherent to the ovary. 

 Calyx free from the ovary. 

 Green foliage lacking. 

 Green foliage present. 



Corolla gamopetalous. 



Fruit a naked capsule. 

 Fruit a berry-like drupe. 

 Corolla polypetalous. 



Flowers in a raceme on a scape. 



Flowers solitary on a scape. 



Flowers in a corymb or umbel on a leafy stem. 



220. CHIMAPHILA. 



2 IS. PYROLA. 



Low and smooth perennial herbs: leaves rounded, petioled, 

 evergreen, basal: flowers nodding, in a simple raceme, on a more 

 or less scaly-bracted scape: corolla of 5 concave more or less con- 

 verging petals: stamens 10: ovary superior, 4-5-celled; ovules very 

 numerous: fruit a depressed globose 5-lobed 5-celled capsule. 



vStvle straight: raceme one-sided. P. SECUNDA. 



Style deflexed: leaves mottled. P. picta. 



Style deflexed: leaves not mottled. P. ROTUNDIFOWA. 



P. secunda L. Rootstocks slender, usually much branched: stems erect 

 or ascending: leaves somewhat clustered at the base, ovate, obtuse or acute, 

 crenate, 1-3 cm. long, on slender petioles 1 cm. long: scapes 10-25 cm. high, 

 with few scale-like bracts, which also occur between the leaves: raceme one- 

 sided, 3-8 cm. long: flowers white, on short pedicels, soon nodding: corolla 

 regular; petals oblong, 4 mm. long, each with a pair of tubercles at base: 

 anthers obtuse: styles straight; stigmas large, 5-lobed. Deep woods, Cedar 

 Mountain. 



