Dicotyls or Exogenous Plants. 91 



1. Genus LE'-DUM. — Shrubs, l-.'5 ft. high ; leaves persistent, oblong 

 or linear-oblong, with rust}- wool beneath, entire, margins revolute ; 

 petals distinct, spreading; flowers white, small, in terminal, umbel- 

 like clusters. 



Le'-dum groen-lan'-di-cum Oedr. (Z. latifolium Ait.) Labrador Tea. — 



In cold bogs and mountain woods. 



2. Genus A-ZA'-LE-A. — Calyx mostly small or minute ; the 5 (some- 

 times 10) stamens and the style more or less exserted and declined ; 

 leaves deciduous, glandular-mucronate. 



A-za'-le-a vis-co'-sa L. [Rhododendron z'iscosum Torr.) Clammy Azalea; 

 White Swamp-Honeysuckle. — Leaves oblong-obovate, the margins and 

 midrib, also the branchlets bristly; corolla clammy, the tube much 

 longer than the lobes ; flowers appearing after the leaves. 



A-za'-le-a nu-di-flo'-ra L. [Rhododendron nudiJJormn Torn) — Purple 

 Azalea: Pinxter-flower. — Leaves downy underneath; tube of the corolla 

 scarceh- longer than the ample lobes, slightly glandular ; flowers from 

 flesh color to pink and purple, appearing before or with the leaves. 



A-za'-le-a lu'-te-a L. [Rhododendron calendidacenm Torn) Flame- 

 colored Azalea. — Leaves hairy; tube of the corolla shorter than the 

 lobes, hairy; flowers large, orange usually turning to flame color, ap- 

 pearing with the leaves. 



?>. Genus RHO-DO-DEN'-DRON. — Calyx mostly small or minute, 

 the 10 stamens rarely exserted; leaves coriaceous and persistent. 



Rho-do-den'-dron max'-i-mum L. Great, Laurel. — Leaves 4-10 in. long, 

 very thick, smooth, with somewhat revolute margins; corolla bell- 

 shaped, 1 in. broad, pale rose-color, or nearly white; blooming in July. 



4. Genus KAL'-MI-A. — Calyx 5-parted; corolla with 10 depressions 

 in which the 10 anthers are lodged; leaves evergreen, coriaceous. 



Kal'-mi-a lat-i-fo'-li-a L. Mountain Laurel ; Calico Bush: Spoonwood. — 



Leaves mostly alternate, bright green both sides, ovate-lanceolate, or 

 oblong; flowers rose-color or nearly white, in terminal corymbs. 



Kal'-mi-a an-gus-ti fo'-li-a L. Sheep Laurel : Lambkill; Wicky. — Leaves 

 commonly opposite or in threes, pale or whitish underneath, light- 

 green above, narrowly-oblong ; flowers more crimson and much smaller 

 than in the last; corvmbs lateral. 



