632 ERICACEAE (HEATH FAMILY) 



2. EURHODODENDRON DC. Leaves coriaceous and persistent ; stamens 

 (commonly 10) and style rarely exserted, somewhat declined, or sometimes 

 equally spreading. 



7. R. maximum L. (GREAT LAUREL.) Shrub or tree, 2-10 m. high ; leaves 

 0.8-2 dm. long, very thick, elliptical-oblong, or lance-oblong, acute, narrowed 

 toward the base, very smooth, with somewhat revolute margins ; pedicels viscid ; 

 corolla bell-shaped, 3.5-6 cm. broad, pale rose-color or nearly white, greenish in 

 the throat on the upper side, and spotted with yellow or reddish. Damp deep 

 woods, rare from N. S., Me., and Que. to Ont. and 0., but very common through 

 the Alleghenies from N. Y. to Ga. June, July. 



8. R. catawbi6nse Michx. (MOUNTAIN ROSE BAT.) Leaves oval or oblong, 

 rounded at both ends, smooth, pale beneath, 0.5-1.5 cm. long; corolla broadly 

 bell-shaped, lilac-purple ; pedicels rusty-downy. High Alleghenies, Va. to Ga. 

 June. 



9. R. Iapp6nicum (L.) Wahlenb. (LAPLAND ROSE BAT.) Dwarf, prostrate 

 in broad tufts; leaves 0.5-1.5 cm. long, elliptical, obtuse, dotted (like the 

 branches) with rusty scales ; umbels few-flowered ; corolla open bell-shaped, 

 dotted, violet-purple; stamens 5-10. Alpine summits, N. Y., N. H., and Me. 

 to the Arctic regions. June, July. (Arctic Eurasia.) 



10. MENZIESIA Sm. 



Calyx small and flattish, 4-toothed or 4-lobed. Corolla cylindraceous-urn- 

 shaped, soon bell-shaped. Stamens included ; anther-cells opening by an oblique 

 pore. Capsule ovoid, woody, 4-celled, 4-valved, many-seeded. Seeds narrow, 

 with a loose coat. Low shrubs, the straggling branches and the alternate 

 leaves usually hairy and ciliate with rusty rather chaff-like bristles. Flowers 

 small, developed with the leaves, in terminal clusters, greenish-white and 

 purplish, nodding. (Named for Archibald Menzies, who in Vancouver's voyage 

 brought the original species from the Northwest Coast.) 



1. M. glabella Gray. Strigose-chaffy scales mostly wanting ; leaves obovate, 

 barely mucronate-tipped, glabrous or nearly so ; filaments ciliate below ; capsule 

 glabrous or nearly so; seeds long-caudate at each end. Minnesota Point, L. 

 Superior, and northwestw. June, July. 



2. M. pilosa (Michx.) Pers. More or less chaffy ; leaves obovate-oblong, 

 prominently glandular-mucronate, strigose-hirsute especially above ; filaments 

 glabrous ; capsule beset with short gland-tipped bristles,' seeds merely apiculate. 

 (Jf. globularis Salisb.) In the Alleghenies from Pa. to Ga. May-July. 



11. LEIOPHYLLUM Pers. SAND MTBTLE 



Calyx 5-parted. Corolla of obovate-oblong petals, spreading. Style filiform. 

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

 much branched evergreen, with the aspect, foliage, etc., of Ledum, but the 

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

 terminal umbel-clusters. (Name formed of Xeloj, smooth, and <f>v\\ov, leaf.) 

 DKNDRIUM Desv. 



1. L. buxifblium (Berg.) Ell. Shrub, 1-9 dm. high ; leaves oval or oblong, 

 smooth and shining, &-13 mm. long. Sandy pine barrens, N. J. to Fla. May, 

 June. 



18. LOISELEtTRIA Desv. ALPINE AZALEA 



Calyx 5-parted, nearly as long as the bell-shaped regular corolla. Stamens 

 not declined. Style short. Capsule ovoid, 2-3-celled, many-seeded, 2-3-valved ; 

 valves 2-cleft from the apex ; placentae borne on the middle (if 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. (Named for J. L. A. 

 Loiseleur-Delongchamps, a French botanist.) CHAMAECISTUS Oeder. 



