264 HEATH FAMILY. 



* Polypetalotis or nearly so; the (white) corolla of 5 equal petals, widely spreading, 

 oval or obovate; leaves evergreen ; flowers in a terminal umbel. 



18. LEDUM. Stamens 5-10 ; anthers opening by holes at top. Pod 5-celled. Leaves 

 alternate, thinnish, rusty-woolly underneath. Flowers from scaly terminal buds, as 

 in Rhododendron. 



14. LEIOPHYLLUM. Stamens 10 ; anthers opening lengthwise. Pod 2-5-ceUed. Leaves 



email, smooth both sides, glossy, mostly opposite. 



IIL PYKOLA SUBFAMILY. Shrubs, or evergreen herbs, 

 with calyx free from the ovary, corolla of separate petals, 

 anthers turned outwards in the bud, soon inverted, when the 

 holes by which they open are at top (or at bottom in Clethra). 

 Seeds innumerable, with a loose cellular coat. 



Shrubs ; leaves deciduous ; flowers in hoary racemes ; capsule 3-celled. 



15. CLETHRA. Sepals and obovate-oblong petals 5. Stamens 10 ; anthers arrow-shaped 



and reflexed in the bud, the hole at the top of each cell then at the bottom. Style 

 8-cleft at the apex. Pod inclosed in the calyx. Leaves alternate, serrate, feather- 

 veined, deciduous. 



* Herbs, or very nearly so, low ; leaves evergreen ; capsule 4-5-celled. 



16. CHIMAPHILA. Flowers several in a corymb or umbel, with orbicular, widely spread- 



ing petals, 2-horned anthers on filaments enlarged and hairy in the middle. Very 

 short, top-shaped style covered by a broad, orbicular, stigma, and valves of pod 

 smooth on the edges. Stems leafy below ; leaves narrow, smooth, and glossy. 



17. MONESES. Flower solitary, with orbicular widely spreading (sometimes only 4) 



petals, conspicuously 2-horned anthers, large, 5-rayed stigma on a straight style, 

 and pod as in the last genus ; otherwise like Pyrola. 



18. PYROLA. Flowers in a raceme on a scape which bears rounded leaves at base. 



Petals roundish, more or less concave. Stamens 10, with awl-shaped filaments. 

 Style long. Valves of pod cobwebby on the edges. 



IV. INDIAN PIPE SUBFAMILY. Herbs destitute of 

 green foliage, parasitic on roots of other plants ; flowers much 

 as in III. ; commonly represented by one genus. 



19. MONOTROPA. Calyx of 2 or more deciduous bract-like scales. Corolla of 4 or 5 



erect spatnlate or wedge-shaped petals, resembling the scales of the stem. Stamens 

 8 or 10 ; anthers kidney-shaped, opening across the top ; style stout ; stigma 

 depressed. Pod 4-5-celled, seeds innumerable, minute, resembling fine sawdust. 



1. GAYLUSSACIA, HUCKLEBERRY. (Named for the French 

 chemist, Gay-Lussac.*) Flowers white tinged with reddish, in late 

 spring ; the edihle fruit ripe late in summer, that of the last species 

 sometimes gathered from the market. HUCKLEBERRY is a name of 

 indefinite application. It is generally applied to the black-fruited 

 species of this genus and the next ; while BLUEBERRY is used for the 

 glaucous-blue species. 



O. dum&sa, Torr. & Gray. DWARF H. Rather hairy or bristly, 

 with thickish, rather shining, oblong leaves, long racemes, leaf-like oval 

 bracts to the pedicels, bell-shaped corolla, and insipid black fruit. Sandy 

 soil near the coast. 



