300 ERICACE^. (HEATH FAMILY.) 



corymbs or clusters, from large scalj-bractcd biids. (' PobutevBpov, rose-tree ; tho 

 ancient name.) 



1. H. ia^imum, L. (Great L.vurel.) Leaves d/iiilical-ol/lonci or hxnce- 

 oblong, aciilc, imrroiaed (awards the Inise, very smooth, witli somcwiiat revolutc 

 margins; i)eiiicels visciil ; corolla bell-sliapeil. — Damp deep woods, sparingly 

 from Maine to Oliio, but very common along sliaded water-courses through the 

 mountainous parts of Pennsylvania and southward. July. — Shrui) or tree 6° - 

 20° liigh. Leaves 4' -10' long, very thick. Corolla an inch broad, pale rose- 

 color or nearly white, greenish in the throat on the upper side, and spotted with 

 yellow or reddish. 



2. R. Catawbi6llSe, Michx. Leares ornl or ohionrj, roinidcd at both ends, 

 smooth, pale beneath (3' -5' long); corolla broadly bell-shaped, lilac-purple; 

 pedicels rusty-downy. — High Alleghanies, Virginia and southward. June. — 

 Shrub 3° - 6° iiigh. 



• 3. R. Lappbnicum, Wahl. (Lapland Rose-bay.) Z^itvjr/] prostrate ; 

 leaves elliptical, obtuse, dotted (Wkii the branches) with rusty scales ; umbels few- 

 flowered ; corolla open bell-shaped, dotted ; stamens 5 - 10. — Aljjine summits of 

 the mountains of Maine, New Hampshire, and New York. July. — Shrub 6' 

 high, in broad tufts : leaves ^' long. Corolla violet-purple; (Eu.) 



19. RHODORA, Duhamcl. Riiodora. 



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

 usually 3-lol)ed or 3-clcft, and the lower two-parted or of 2 distinct s])reading 

 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 . R. Canadensis, 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 dowTiy underneath ; the showy 

 rose-j)urple (rarely white) flowers in umbel-like clusters, on short peduncles, 

 appearing rather earlier than the leaves. 



20. LEDUM, L. Labrador Tea. 



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

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

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

 of tiie columella. — Low shrubs, with the alternate entire leaves clothed with 

 rusty wool underneath, persistent, the margins revolutc : herbage slightly fra- 

 grant when bruised. Flowers white, small, in terminal umbel-like clusters 

 from large scaly buds : bracts or scales thin and caducous, {.\rj8ov, the ancient 

 Greek name of the Cistus.) 



1. L. Iatif61iuni, 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. J«ine. — Shrub 2°-5° high. (L. 

 PAn'sTRE, L., grows in British America. It is dis::;nguished by its linear leaves, 

 uniformly 10 stamens, and oval }>ods.) (Eu.) 



