322 ERiCACE^. (heath family.) 



18. LEIOPHYLLUM, Pers. Saxd Myrtle. 



Calyx 5-parted. Corolla of 5 distinct obovate-obloug petals, spreading 

 Stamens 10, exserted ; anthers opening lengthwise. Style filiform. Capsule 

 2 - 3-celled, splitting from the apex downward, many-seeded. — A low much- 

 branched evergreen, with the aspect, foliage, etc., of the last genus, but the 

 croAvded leaves sometimes opposite, scarcely petioled. Flowers small, white, in 

 terminal umbel-like clusters. (Name formed of \e7os, smooth, and (pvWov, leaf.) 



1. L. buxifolium, Ell. Shrub 6-10' high; leaves oval or oblong, 

 smooth and shining, 3 - 6" long. — Sandy pine barrens, X. J. to Fla. May. 



19. LOISELEtmiA, Uesv. Alpine Azalea. 



Calyx 5-partetl, nearly as long as the bell-shaped and deeply 5-cleft regular 

 corolla. Stamens 5, not declined, included ; anthers opening lengthwise. 

 Style short. Capsule ovoid, 2 - 3-celled, many -seeded, 2 - 3-valved ; valves 2- 

 cleft from the apex ; placentee borne on the middle of the columella. — A 

 small depressed shrubby evergreen, much branclied and tufted, smooth, with 

 coriaceous opposite elliptical leaves, on short petioles, with revolute margins. 

 Flowers small, white or rose-color, 2 - 5 in a cluster, from a terminal scaly bud ; 

 scales or bracts thick and persistent. (Named for Loiseleur-Delongchamps, a 

 French botanist.) 



1. L. prOGUmbens, Desv. — Alpine summits of the White Mountains^ 

 N. H., and northward. June. (Eu., Asia.) 



20. CLETHRA, Gronov. White Alder. 



Calyx of 5 sepals, imbricated in the bud. Corolla of 5 distinct obovate-olx 

 long petals. Stamens 10, often exserted ; anthers arrow-shaped, erect in the 

 bud, becoming inverted and opening by basal pores or short slits. Style slen- 

 der, 3-cleft at the apex. Capsule 3-valved, 3-celled, many-seeded, enclosed in 

 the calyx. — Shrubs or trees, with alternate serrate deciduous leaves, and white 

 flow^ers in terminal hoary racemes. Bracts deciduous. {K\ridpa, the ancient 

 Greek name of the Alder, which this genus somewhat resembles in foliage.) 



1. C. alnifolia, L. (Saveet Pepperbush.) Shrub 3- 10° high; /eay^s 

 wedge-ohovate, sharp/t/ serrate, entire toward the base, prominently straight- 

 veined, smooth, green both sides , racemes itpn'fjhf, panicled ; bracts shorter than 

 the flowers : filaments smooth. — Wet copses, ]\Iaiue to Va., near the coast, and 

 soutliAvard. Covered in July and August with handsome fragrant blossoms. 



2. C. acuminata, Michx. A tall shrub or small tree ; leaves oval oi 

 oblong , pointed , thin, finely serrate (3-7' long), pale beneath ; racemes solitari/, 

 drooping; bracts longer than the flowers; filaments and pods hairy. — ■ Woods 

 in the AUeghanies, Va. to Ga. July. 



21. CHIMAPHILA, Pursh. Pipsissewa. 



Petals 5, concave, orbicular, widely spreading. Stamens 1 ; filaments en- 

 larged and hairy in the middle ; anthers as in Pyrola, but more or less conspic- 

 uously 2-horned. Style very short, inversely conical, nearly immersed in the 

 depressed summit of the globular ovary ; stigma broad and orbicular, disk- 

 shaped, the border 5-crenate. Capsule, etc., as in Pyrola, but splitting from 



