Erica. LXXVIII. ERICACEiE. 377 



9, R. Lapponicum. Wahl. (A/alca Lapponica. Linn.) Lapland lihodo- 

 dcndron.—Dwari'; Irs. elliptical, rou^'luMK-d with excavated punctures; p. 

 in termiual, leafy clusters, catnpanulate, limb spreading?, 5-lohed ; sta. 5, ex- 

 serted.— An erect" shrub 8—10' hiii^h, native of the White Mts. ! Branches nume- 

 rous, with a roui^h bark. Leaves about 5" bv '2i", acute, with an obtuse angle, 

 revolute, lerrus^inous beneath, all fasciculated at the summits of the branches. 

 Flowers 7—9"" diam. Peduncle bracted at base. Calyx pubescent. .Corolla 

 deep purple, regular, lobes roundish, as broad as the leaves. Style very long, 

 ascending. June, July. 



10. R. ARBORKiM. Smith.—."?/, arborescent; Zr.^. lanceolate, glabrous, with 

 shining white spots beneath ; /s-. densely corymbose ; caps, pubescent, 8—10- 

 celled.— A most beautiful tree or shrub, irom the Ilimmaleh Mts. Flowers 

 purple, red, white, cinnamon-color, &c. f 



11. R. PoNTicuM. — Lrs. oblong-lanceolate, attenuated to each end, smooth 

 and scarcely paler beneath; cori/mhs short, terminal; cor. campanulate-rotate; 

 caJ. lobes siibacute, very short.-^From Asia Minor. Flowers large, often 2' 

 diam., purple — but in cultivation very variable, -f 



12. R. Indicum. Sweet. (Azalea Indica. Linn.) — Branchlcts, petioles, veins 

 and sepals strigo.se, but not glandular ; lis. cuneate-lanceolate, ciliate, acumi- 

 nate at each end; JIs. terminal, 1—3 together, on short pedicels.— From Java. 

 Flowers scarlet, purple, crim.son, flame-color, &c., in cultivation very brilliant, f 



14. LEIOPHYLLUM. Pers. 

 Gr. Xeios, smooth, <pv\\ov, leaf, 



Cal3'x 5-parted, equaling the length of the capsule ; pet. 5, ovate- 

 oblong ; sta. 10, exserted ; fil. subulate; cells of anthers dehiscing 

 by a lateral cleft ; ovary globose ; sty. filiform ; caps 5-celled, 5-valved, 

 many-seeded. — Small, smooth shrubs, loith erect branches. Lvs. alter- 

 nate, entire, oval, coriaceous. Corymbs terminal. Fls. white. 



L. BUXIFOLIUM. Ell. 



St. erect ; lvs. oval or obovate, subsessile ; caps, glabrous. — Pine barrens, 

 N. J. to Car. Shrub 8—12' high, much branched. Leaves 4—5" by 2 or 3", 

 very smooth and shining, margin strongly revolute. Flowers numerous and 

 small. May, June. 



15. LEDUM. 

 Calyx minute, 4-toothed ; corolla 5-petaied, spreading ; stamens 

 5 — 10, exserted; anthers opening by 2 terminal pores; capsule 5- 

 celled, 5-valved, opening at the base. — Shrubs. Lvs. alternate, ever- 

 grecji, entire, fcrruginous-tomentose beneath, coriaceous. Fls. in terminal 

 corymbs, white. 



L. PALUSTRE (and L. latifolium. AU.) Labrador Tea. 



Lvs. elliptic-oblong or oblong-linear ; sta. 5 — 10, more or less exserted. — 

 Mountain bogs, Penn. to Lab and Greenland, White Mts. ! Not uncommon. 

 A shrub 2 — 3f high, readily known by its leaves, which are smooth above, 

 clothed beneath with a dense, ferruginous down, and strongly revolute or repli- 

 cate at the margin. The petioles and the younger twigs are also covered with 

 down. Leavesl — 2' long, nearly ^ as wide. Corymbs terminal, of about a 

 dozen flowers. Petals 5, white. Pedicels nearly as long as the leaves. Sta- 

 mens 5 — 10, as long as the petals. Style somewhat declined. July. 

 /?. aiigustifulium. Lvs. narrower, almost linear; sta. mostly 10. 



16. ERiCA. 



Gr. efJiKt), to break; in allusion to the brittleness of the branches and stems. 



Calyx 4-cleft ; cor. tubular, globose, ovoid, urceolate, campanulate 

 or hypocrateriform, liinb short, 4-lobed ; stam. 8 ; style filiform ; caps. 

 4, rarely 8-celled, 4-valved, loculicidal ; seeds 2 — 00 in each cell, 



