322 ERICACEAE. (HEATH FAMILY.) 



18. LEIOPHYLLUM, Pers. SAND MYRTLE. 



Calyx 5-parted. Corolla of 5 distinct obovate-oblong 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 

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

 terminal umbel-like clusters. (Name formed of AeTos, smooth, and <j>u\\ov, leaf.) 



1. L. buxif61ium, Ell. Shrub 6-10' high; leaves oval or oblong, 

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



19. LOISELEURIA, Desv. ALPINE AZALEA. 



Calyx 5-parted, 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 ; placentae borne on the middle of the columella. A 

 small depressed shrubby evergreen, much branched 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 Loiselcur-Delongchamps, a 

 French botanist.) 



1. L. procumbens, Desv. Alpine summits of the White Mountains,, 

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



20. CLETHRA, Grouov. WHITE ALDER. 



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

 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 

 flowers in termiifcl hoary racemes. Bracts deciduous. (K\^dpa, the ancient 

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



1. C. alnifolia, L. (SWEET PEPPERBUSH.) Shrub 3-10 high; leaves 

 wedge-oboi'ate, sharply serrate, entire toward the base, prominently straight- 

 veined, smooth, green both sides , racemes upright, panicled ; bracts shorter than 

 thr flowers ; filaments smooth. Wet copses, Maine to Va., near the coast, and 

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



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

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

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

 in the Alleghanies, Va. to Ga. July. 



21. CHI MAP HI LA, Pursh. PIPSISSEWA. 



Petals 5, concave, orbicular, widely spreading. Stamens 10; 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 



