Erica. LXXVIIl. ERICACE^. 377 



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

 dendron. — Dwarf; hs. elliptical, roughened with excavated punctures; jis. 

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

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

 roits, with a rough bark. Leaves about 5" by 2i", acute, with an obtuse angle, 

 revolute, ferruginous 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. ARBOREUM. Smith. — St. arborescent; Ivs. lanceolate, glabrous, with 

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

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

 purple, red, white, cinnamon-color, &c. •\ 



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

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

 caZ. lobes subacttte, very short. — From Asia Minor. Flowers large, often 2' 

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



12. R. Indicum. 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. 

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



14. LEIOPHYLLUM. Pers. 



Gt. \eios, smooth, <pvX\ov, leaC 



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, 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 S-petaied, spreading ; stamens 

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

 cclled, 5-yalved, opening at the base. — Shrubs. Lvs. alternate, ever- 

 green, entire, ferruginous-tomcntose beneath, coriacems. Fls. in terminal 

 corymbs, white. 



L. PALUSTRE (and L. latifolium. Ait.) Lairrador 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. Leaves 1—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. 

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



16. ERICA. 



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



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

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

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



