| _MENZIESIA ERICACE 421 
AZALEASTRUM 
colored flowers on nodding pedicels, developed at the same time 
as the leaves from separate strobilaceous buds that terminate the 
branches of the preceding year. Calyx bristly-hirsute, usually 
4-lobed. Corolla from globular-urceolate to cylindraceous, 4-tooth- 
ed or lobed. Stamens not exserted, usually 8: filaments subulate : 
anthers mostly linear-sagittate, the cells opening by an oblique 
pore or short chink. Style not exserted: stigma truncate. Cap- 
sule short. Placentz attached to the whole length of the short 
columella. , 
M. ferruginea Smith 1. c. Erect straggling shrub 6-8 feet high with 
strigose chaffy ferruginous scales on the young parts: leaves oblong or lance- 
olate-obovate, acute or acutish at both ends, prominently glandular, mu- 
cronate, ciliate with glandular bristles, rusty strigose-hirsute above, merely 
pale beneath: pedicels bristly-glandular: corolla oblong-ovate, becoming cy]- 
indraceous: filaments glabrous: capsule ovate: seeds merely apiculate, or very 
short taied. In the high mountains and along the coast; Oregon to Alaka. 
M. glabella Gray Syn. FI. ii, 39. Erect shrub 6-8 feet high, without 
strigose chaffy scales, or very few on the young petioles and midrib beneath: 
leaves obovate, mostly obtuse, barely mucronate-tipped, glaucescent and 
glabrous or nearly so beneath, sprinkled with some small appressed hairs 
above, an inch long, the obscurely serrulate margins minutely ciliolate: pedi- 
cels naked or somewhat glandular: corolla ovoid-campanulate: filaments 
more or less ciliate below: capsule oblong or ovoid, erect, smooth and naked 
or nearly so: seeds with appendages at each end as long as the nucleus. 
In damp forests, Oregon to Brit. Columbia and east to Lake Superior, 
10 AZALEASTRUM 
RHODODENDRON § AZALEASTRUM Maxim. 
Shrubs with thin deciduous leaves, and rather large white or 
light-colored flowers. Inflorescence lateral, the flowers from. 
separate 1-3-flowered lateral buds below the leaves. Bud-scales 
caducous. Calyx 5-parted, the divisions more or less. foliaceous, 
persistent. Corolla almost rotate, regular. 5-lobed. Stamens 
10, not declined: filaments filiform: anthers erect, opening by a 
hole at the apex of each cell. Style filiform: stigma capitate. 
Capsule 5-valved from the summit. Seeds numerous and small, 
with a loose chaff-like coat. Ar 3 
A. albiflorum. Rhododendron albiflorum Hook. Stems erect, 2-6 feet 
high with slender branches, pubescent with slender straight or silky and 
some short glandular hairs when young, nearly glabrous in age: leaves mem- 
branaceous, oblong or narrower, obscurely undulate, 1-2 inches long, pale 
green: flowers 1-3 im the fascicles, nodding on short pedicels; sepals oblong. 
obtuse, 8-4 lines long, somewhat foliaceous: corolla open-campanulate, 8-10 
lines long, 5-lobed, bright white: filaments bearded at base: stigma peltate, 
5-lobed : capsule ovoid, 3-4 lines long. On the highest mountains of northern 
Oregon to Brit. Columbia and the Rocky Mountains. 
11 AZALEA L. Gen. n. 212. 
Erect branching shrubs with alternate thin deciduous leayes, 
and large flowers in terminal umbels developed from scaly buds 
that terminate the growth of the previous year and surrounded at 
