422 ERICACEA AZALEA 
RHODODENDRON 
the base by lateral and smaller leaf-buds. Bud-scales and bracts 
caducous or early deciduous. Calyx small or minute, 5-parted. 
Corolla funnelform, glandular-viscid outside, with narrow tube 
and 5-lobed, often more or less 2-lipped limb. ‘Stamens 5, rarely 
10, exserted, usually declined: anthers attached to the filaments 
by their backs, the cells opening by terminal pores. Style slen- 
der, declined exserted. Ovary 5-celled, many-ovuled. Capsule 
oblong or narrower, 5-valved from the summit. Seeds minute, 
with a loose chaff-like coat. 
A. occidentalis T. & G. Pacif. R. Rep. iv. 116. Rhododendron occi- 
dentale Gray. Stems erect, 2-10 feet high, much branched: leaves obovate- - 
oblong, nearly or quite glabrous at maturity but minutely ciliate, bright green 
and shining above, paler beneath, 1-2 inches long, tapering below to a short 
petiole, tipped with ashort red gland: calyx 5-lobed, the oblong or ovate 
lobes glandular and ciliate, about a line long, corolla cream-white with 
orange stripes, 2 inches long, with conspicuous funnelform tube, slightly 
irregular limb and acute lobes, glandular-viscid outside: stamens 5, exserted 
and declined: filaments hairy below; style long-exserted, curved upward; 
capsule oblong, 8-12'lines'long. About springs and along streams, south- 
western Oregon and California. . ite 
12 RHODODENDRON L, Gen. n. 548. 
Shrubs or small trees with alternate evergreen coriaceous leaves 
and mostly large showy white to rose-colored or purple flowers in 
terminal umbels or corymbs from scaly buds, the thin scales de- 
ciduous when the flowers open. Calyx small or minute, 5-lobed 
or 5-parted, persistent. Corolla campanulate, 5-lobed, nearly 
regular. Stamens usually 10, little exserted declined or equally 
spreading: anthers erect, attached by their backs, the cells open- 
ing by terminal pores. Capsule short or elongated, mostly woody, 
5-20-valved from the summit. Seeds very numerous and small, 
with a loose chaff-like coat. 
R. Californicum Hook. Bot. Mag. t. 4863. Stems 3-12 feet high, 
with stout erect “branches, glabrous: leaves broadly oblong, 3-6 inches long, 
dark green and shining above: flowers very numerous in the fascicles: calyx 
minute, slightly 5-lobed: corollas large and showy, rose-color, a little irregu- 
lar, broadly campanuldte more than an inch in diameter, the 5 broad lobes 
undulate: stamens 10, not exserted, ovary rusty-hirsute: capsule 10-18 lines 
long. On mountains and along the coast, California to, Brit. Columbia. 
R. macrophyllum Don Syst. iii, 848. ‘‘ Shrub 10 to 15 feet high: 
leaves oblong, acute at both ends, 5 to 8 inches in length, thinnish: corolla 
white, less than an inch long: its lobes oblong: ovary bristly hirsute. 
Woods, Puget Sound Washington to Brit. Columbia.’ 
+ + +~ Corolla polypetalous or very nearly so. Filaments fili- 
form. Placentz borne on the swmmit of the persistent columella. 
Seed scobiform or linear. 
13 LEDUM L. Gen. n. 546. 
Low shrubs with alternate persistent, more or less resinous- 
dotted slightly fragrant leaves, and fascicles of white flowers de- 
