Rhododendron. ERICACEAE. 457 



anthers are severally lodged. Stamens 10 : filaments filiform : anthers opening by 



a terminal hole or chink. Style slender : stigma depressed. Capsule globular, 



septieidally 5-valved : the placentae pendulous. Seeds slender. — Evergreen shrubs ; 



with entire coriaceous leaves, either opposite or alternate, and showy iiowers mostly 



in an umbel or corymb ; the pedicels subtended by coriaceous and persistent bracts. 



The Kalrnias are all American and of the eastern side of the continent, excepting the following, 

 which ranges northward from Newfoundland to Alaska, and southward on high mountains. 



1. K. glauca, Linn. Shrub spreading, from a span to 2 feet high, very glabrous, 

 with flat ascending branches: leaves opposite or sometimes whorled in threes, 

 nearly sessile, narrowly oblong or appearing linear when the margins are revolute, 

 white and glaucous beneath : corymb terminal, of several or few flowers, the lower 

 bracts resembling the leaves : pedicels filiform : corolla lilac or chocolate-purple, 

 half an inch in diameter. — Ait. Kew. ii. t. 8 ; Bot. Mag. t. 177. 



Sierra Nevada ; on Mount Dana, at and above 11,000 feet, in marshy places, Brewer. Also 

 Webber Peak, Lcmmon. Only the var. microphylla, Hook., i. e. a depauperate state, rising 

 little above the ground. Mr. Watson found it on similar high mountains in Nevada. It extends 

 to the subarctic regions, and south to lat. 41° in the Atlantic States. 



9. MENZIESIA, Smith. 



Calyx small or minute, mostly 4-parted or toothed, glandular-ciliate. Corolla 

 from globulur-urnshaped to campanulate, obtusely lobed. Stamens mostly 8, 

 included : filaments flat : anthers rather short, naked : the cells opening at top by 

 an oblique pore or chink. Style slender : stigma capitate-truncate. Capsule glob- 

 ular or ovoid, mostly 4-celled and -t-valved, septicidaL Seeds numerous, scobiform 

 (like line sawdust), the coat being very loose. — Deciduous-leaved shrubs (unequally 

 divided between. Japan and X. America); the foliage resembling that of Azaleas; 

 the small flowers in terminal umbels (sometimes becoming lateral), developed simul- 

 taneously witli the leaves, from separate scaly buds ; their thin-scarious scales or 

 bracts early deciduous. 



1. M. ferruginea, Smith. Loosely branched shrub, 2 to 5 feet high : leaves 

 disposed to lie crowded at the end of the branches, thin, short-petiolcd, oblong- 



obovate, entire, acute and with a callous gland-like nmcronate tip. more or less hir- 

 sute with rusty hairs ami some chaffy bristles, especially on the midrib and margins : 



branchlets and pedicels also glandular: corolla purplish or greenish, short-campanu- 

 late with at first the mouth contracted. — Ie. Ined. t. .'50. 



Woods of Oregon and northward : doubtless in the northwestern part of California, but not yet 

 seen : extends eastward nearly to the I'ppcr (ireat Lakes, and a variety of it inhabits the Allegiia- 

 nies. The only American species. Japan has several. 



10. RHODODENDRON, Linn., including Azalea, 



i alvx very small in our species. Corolla large, varying from funnelform to eam- 

 panulate, 5-lobed, often slightly irregular. Stamens 5 to L0 : filaments filiform, 

 commonly declined : anthers short, the cells opening by a terminal pore or chink. 

 style long, commonly declined or incurved: stigma truncate or capitate. Capsule 



w ly, septieidally o-valved from the summit. Seeds very numerous and small, 



scobiform, i. e. with a loose chaff-like coat. — Ornamental shrubs ; with alternate and 

 entire leaves, usually crowded on the flowering branches; the showy flowers in 

 terminal umbels or corj mbs from ample scaly buds, the thin scales or bracts decidu 



