258 ERICACEAE. (HEATH FAMILY.) 



trntc ; leaves elliptical, obtuse, dotted both sides (like the hranchcs) with rusty scales ; 

 umbels few-flowered ; corolla open bell-shaped, dotted ; stamens 5 - 10. Alpine 

 summits of the high mountains of Maine, New Hampshire, and New York. 

 July. Shrub 6' high, forming broad matted tufts ; the leaves ' long. Corolla. 

 violet-purple. (Eu.) 



18. RIIOL>6RA, Duham. RIIODORA. 



Calyx minute, 5-toothed. Corolla irregular and 2-lipped ; the upper lip usu- 

 ally 3-lobed or 3-cleft, and the lower 2-parted or of 2 distinct spreading petals. 

 Stamens 10, and with the slender style declined. Otherwise as in Azalea. 

 (Name from p68ov, a rose, from the color of the showy flowers.) 



1. K. CanadcilSiS, L. Damp cold woods and swamps, New England 

 to Penn. and northward, or on mountains. May. A handsome low shrub, 

 with the oblong deciduous leaves whitish and downy underneath ; the showy 

 rose-purple (rarely white) flowers in clusters on short peduncles, rather earlier 

 than the leaves. 



19. L.EDUM, L. LABRADOR TEA. 



Calyx 5-toothed, very small. Corolla of 5 obovate and spreading distinct 

 petals. Stamens 5-10: anthers opening by terminal pores. Pod 5-celled, 

 splitting from the base upwards, many-seeded : placenta; borne on the summit 

 of the columella. Low evergreen shrubs, with the alternate entire leaves 

 clothed with rusty wool underneath, the margins re volute : slightly fragrant 

 when bruised. Flowers white, handsome, in terminal umbel-like clusters from 

 large scaly buds, bracts caducous. (AqoW, the ancient Greek name of the Cis- 

 tus, transferred by Linnaeus to this genus.) 



1. Li. Intifolitlin, Ait. Leaves elliptical or oblong; stamens 5, sometimes 

 6 or 7 ; pod oblong. Cold bogs and damp mountain woods, New England 

 to Pennsylvania, Wisconsin, and northward. June. Shrub 2 -5 high. 

 (L. PALUSTRE, L., grows in British America, but is not known to occur in the 

 United States. It is distinguished by its linear leaves, uniformly 10 stamens, 

 and oval pods.) (Eu.) 



2O. LiOISELElIRIA, Dcsv. ALPINE AZALEA. 



Calyx 5-partcd, nearly as long as the rather bell-shaped and deeply 5-clctt 

 regular corolla. Stamens 5, not declined, included : anthers opening length- 

 wise. Style short. Pod ovoid, 2 -3-cellcd, many-seeded, 2 - 3-valved ; the valves 

 2-cleft from the apex: placentae borne on the middle of the columella. A 

 dwarf and prostrate evergreen shrubby plant, much branched and tufted, smooth, 

 with small and coriaceous opposite elliptical leaves, on short petioles, with re vo- 

 lute margins. Flowers small, white or rose-color, 2-5 in a cluster, from a ter- 

 minal scaly bud ; the scales or bracts thick and persistent. Named for fjoiseleur 

 Dekmgdiampt, a French botanist.) 



1. Li. prociilllbciis, Desv.* (Azalea proeumbens, L.) Alpine sum 

 mils of the White Mountains, New Hampshire, on rocks. June. (Eu.) 



