EEICACE.^. (heath FAMILY.) 287 



12. RHODODENDRON, L. Rose Bay, Honetscckle. 



Calyx mostly miuute, 5-toothed. Corolla bell-shaped or fuunel-shaped, usu- 

 ally somewhat irregular, 5-lobed. Stameus 5 or 10, mostly declined: anthers 

 opening by terminal pores. Style single, elongated : stigma capitate. Cap- 

 sule 5-celled, 5-valved, many-seeded. Seeds minute, scale-like. — Shrubs or 

 small trees. Lea^•es alternate, entire. Flowers showy, in terminal clusters 

 from large scaly buds. 



§ 1. Azalea. — Corolla fannel-shaped, mostltj glandular-viscid externally : sta- 

 mens 5-7, the long Jilaments and style exserted : leaves deciduous, 

 * Flowers appearing with or before the leaves. 



1 . R. nudiflorum, Torr. Branchlets hairy ; leaves obovate or oblong, 

 pubescent, suuu sniuotliish above ; calyx lobes minute ; tube of the corolla 

 pubescent, rather longer than the lobes; coroUa white, varying to deep rose- 

 color, or sometimes yellow. — Swamps and banks of streams. April -May. 



— Shrub 4° -6° high. There are many varieties. 



2. R. ealendulaceum, Torr. Branchlets hairy ; leaves oblong or 

 obovate, hairy ; calyx lobes conspicuous ; tube of the corolla hairy, shorter 

 than the lobes. — Woods on the mountains of Georgia, and northward. May. 



— Shrub 3°- 10° high. Flowers flame-color, very showy. 



3. R. Vaseyi, Gray. Branchlets glabrous; leaves thin, oblong or ob- 

 long-lanceolate, acute at both ends, the veins hirsute ; pedicels glandular, 

 calyx truncate ; corolla glabrous, rose-color, the 3 upper lobes shorter and 

 reflexed, all longer than the tube ; stameus 5-7, unequal ; capsule glandular. 



— Mountaius of Korth Carolina. May. 



* * Flowers appearing after the leaves. 



4. R. visCOSUm, Torr. Branchlets bristly ; leaves coriaceous, obovate, 

 with the margins and veins beneath hirsute, green on both sides or glaucous 

 beneath ; corolla glandular-viscid, white ; calyx teeth minute, rounded. — 

 Swamps. July - August. — Shrub 4° - 6° high. Capsule hispid. 



5. R, arborescens, Torr. Branchlets smooth ; leaves smooth, obo- 

 vate, ciliate on the margins, pale beneath ; corolla glandular-viscid, rose-color ; 

 calyx lobes conspicuous, acute. — Mountains of Georgia, and northward. 

 June. — Slirub 3° - 1 0° high. Flowers fragrant. 



§2. Rhododendron. — Corolla hell-shaped, smooth: stamens 10: leaves 

 coriaceous, evergreen. 



6. R. maximura, L. Leaves obovate-oblong, abruptly acute, smooth 

 and green on both sides ; calyx lobes conspicuous, rounded ; corolla white or 

 rose-color, spotted within with yellow or green. — Shady banks of streams on 

 the mountains of Georgia, and northward. July. — Stem 6° -20° high. 

 Leaves 4'- 10' long. Corolla 1' in diameter. 



7. R. Catawbiense, Michx. Leaves elliptic-oblong, obtuse at each 

 end, mucronate, smooth ; the young ones and branchlets tomentose ; calyx 

 lobes small ; corolla purple ; pedicels and capsule rusty-pubescent. — Highest 

 summits of the mountains of North Carolina. June. — Shrub 3° -6° high. 

 Leaves 3' - 5' long. 



