MENziEsiA ERICACEAE 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- 

 toothed or lobed. Stamens not exserted, usually 8 : filaments sub- 

 ulate: anthers mostly linear-sagittate, the cells opening by an 

 oblique pore or short chink. Style not exserted : stigma truncate. 

 Capsule short. Placentae attached to the whole length of the short 

 columella. 



M. femiginea Smith 1. c. Erect straggling shrub 6-8 feet high with 

 strigose chaffy ferruginous scales on the young parts : leaves oblong or 

 lanceolate-obovate, acute or acutish at both ends, prominently glandu- 

 lar, mucronate, ciliate with glandular bristles, rusty strigose-hirsute above, 

 merely pale beneath : pedicels bristly-glandular : corolla oblong-ovate, be- 

 coming cylindraceous : filaments glabrous : capsule ovate : seeds merely 

 apiculate, or very short tailed. In the high mountains and along the 

 coast, Oregon to Alaska. 



M. glabella Gray Syn. Fl. ii, 39. Erect shrub 6-8 feet high, without 

 strigose chaffy scales, or very few on the young petioles and midrib be- 

 neath: leaves obovate, mostly obtuse, barely mucronate-tipped, glances-' 

 cent and glabrous or nearly so beneath, sprinkled with some small ap- 

 pressed hairs above, an inch long, the obscurely serrulate margins minute- 

 ly ciliolate : pedicels naked or somewhat glandular : corolla ovoid-cam- 

 panulate : 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. 



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 

 membranaceous, oblong or narrower, obscurely undulate, 1-2 inches long, 

 pale green : flowers 1-3 in the fascicles, nodding on short pedicels ; sepals 

 oblong, obtuse, 3-4 lines long, somewhat foliaceous : corolla open-cam- 

 panulate, 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 Moun- 

 tains. 



11 AZALEA L. Gen. n. 312. 



Erect branching shrubs with alternate thin deciduous leaves, 



