Erica. LXXVIIl. ERICACE^. 377 



9. R. Lapponicum. Wahl. (Azalea Lapponica. Linn.) Lapland Rhodo- 

 dendron. — Dwarf; Ivs. elliptical, roughened with excavated punctures ; jls. 

 in terminal, leafy clusters, campanulate, limb spreading, 5-lobed ; sta. 5, ex- 

 serted.— An erect' shrub 8—10' high, native of the White Mts. ! Branches nume- 

 rous, with a rough bark. Leaves about b" by 2i", acute, with an obtuse angle, 

 revolute, ferruginous beneath, all fasciculated at the summits of the branches. 

 Flowers'? — 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. ARBOREUM. Smith.— /S*/. arborescent; Ivs. lanceolate, glabrous, with 

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

 celled. — A most beautiful tree or shrub, from the Himmaleh Mts. Flowers 

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



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

 and scarcely paler beneath ; corymbs short, terminal ; cor. campanulate-rotate ; 

 col. lobes subacute, very short.— From Asia Minor. Flowers large, often 2' 

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



12. R. Indiciim. Sweet. (Azalea Indica. Linn.) — Branchlets, petioles, veins 

 and sepals strigose, but not glandular ; lvs. cuneate-lanceolate, ciliate, acumi- 

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

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



14. LEIOPHYLLUM. Pers. 

 Gr, Xecoj, smooth, ^vXXoi/, leaf. 



Calyx 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, with erect branches. Lvs. alter- 

 nate, entire, aval, coriaceous. Corymbs terminal. Fls. tvhiie. 



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, erer- 

 green, entire, ferruginous-tomentose beneath, coriaceous. Fls. in terminal 

 corymbs, ichite. 



L. PALU.sTRE (and L. latifolium. Ait.) Labrador Tea. 



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

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

 A shrub 2 — 3T 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. Leaves 1 — 2' long, nearly i 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. 

 0. angustifulium. Lvs. narrower, almost linear; sta. mostly 10. 



HI. ERiCA. 



Gr. eptKOJ, to break; in allusion ttithe brittlciieiiij of tlic branches and stems. 



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

 or hypocrateriform, limb sliort, 4-lobed ; stam. 8 ; style filiform ; caps 

 4, rarely S-celled, 4-valvcd,- loculicidal ; seeds 2 — 00 in each cell. 



