^gg EK1CACE.E. lihododendron. 



ous when the flowers develop. — Maximowicz, lihodod. Asiic Or. 13; Lenth. & 



Hook. Gen. PI. ii. 599. 



Ilhododaidrons aiul Azaleas, although dillerent enough as to our common species, arc quite un- 

 (listinguialiable wlien tlio whole are t^ikon into view. 



U. Ai.niKi.out'M, Hook., (.1" tlio \\oo.l.s of Oregon and northwanl, which niay occur within tlie 

 liniita of the SUite', ia a aiiecies with hitoial llowora and 10 stamens, but deciduous leaves. 



§ 1. Flowers from a lanje and special scaly terminal bud: stamens 10 : leaves coria- 

 ceous and evergreen. — Kuhiiodouenduon, Maxim. 



1. R. Californicum, Hook. Shrub 3 to 8 feet liigh, glabrous : leaves oblong, 

 with a bhoit acute point, bright green above, pale beneath : umbel many-llowered : 

 calyx minute, slightly S-lobed : corolla rose i)urple, broadly campanulato ; the broad 

 lobes undulate, upper ones ycllowibh and spotted within : stamens shorter tium the 

 corolla : lilaments incurved at the apex : ovary silky-hairy : capside oblong. — liot. 

 Mag. t. 4863. 



Forests of tlie northern part of the State (Mendocino Co., &c.) extending to Oregon {E. Hall). 

 Shrub 3 to 8 feet higii, resembling R. Calaicbicnsc of the Alleghanies, hut with more showy 

 flowers of about the same size. Leaves 4 to 6 inches long : corolla 2 inches or more in diameter. 

 This solitary Californian true Rhododendron or Rose Bay is well deserving of cultivation. 



§ 2. Flowers from a large and sjiecial scaly terminal bud, close belotv tvhich are 

 separate leaf buds from which the shoots of the season proceed : stamens com- 

 monly 5 and exserted : leaves deciduous. — Azalea, Planchon, (fee. {Azalea, 

 Linn., mainly.) 



2. R. occidentale, Gray. Shrub 2 to G feet high, with shoots glabrous or 

 minutely pubescent when young, not bristly : leaves obovate-oblong, sometimes 

 approaching lanceolate, bright-green and shining above, minutely pubescent, 

 glabrate, the margins minutely hispid-ciliate : scales of the llower-bud somewhat 

 canescent : flowers api)earing after the leaves : sepals distinct, oblong or oval, con- 

 spicuous : corolla miimtely viscid-pubescent outsido, white, with the upper \o\w yel- 

 low inside; the narrow fiinnelform tube equalling the deeply R-cleft slightly irreg- 

 ular limb ; the lobi:s ovate : stamens and style much ex.serted, nunlemtely curvoil : 

 capsule oblong. — Azalea occidentalis, Torr. &i (!ray, Tacif. It. Ivep. iv. 110; Hook. 

 Bot. ]\[ag. t. 5005 ; Torr. liot. Wilkes Exj). 381. A. calendulacea, var., ]]i-nth. 

 PI, Hartw. 321. lihododendron calendulaceum, Hook, (fe Arn. Dot. Beechey, 3G2. 



In wooded distric^ts along streams, almost throughout the State, extending to the mountains 

 east of San Die^o, but conunon northward. Leaves 1^ to 4 inches long, becoming of a rather 

 firm texture. Mowers 2^ to '6 inches long, fragrant. This charming Californian Azalea, the 

 great ornament of the wooilcd districts, belongs rather to the group of the eastern R. viscosuni, 

 than to that of R. ailcndulaccum, the lloweis ajipearing in siunmer or late s}iring, after the leaves 

 have developed. The bright green foliage makes a fine setting for the large ami copious white or 

 sometimes slightly rosy llowers, variegated by a pale yellow band. The fragrance is unlike that 

 of the eastern species, and not so dclicidus. 



11. LEDUM, Linn. Labradou Tea. 

 "■ Calyx small, 5-cleft. Corolla of 5 distinct and spreading oval or oblong petals. 

 Stamens 4 to 10 ; fdaments liliform : cells of the anthers opening by a terminal pore. 

 Stylo liliform, persistent. Capsule oval or oblong, septicidally 5-valved from the 

 base upwards : placentic pendulous. Seeds slender, with a loose coat. — Low and 

 more or less evergreen shrubs ; with broad alternate entire leaves, their margins dis- 

 posed to be revolute, and the lower surface either resinous-dotted or rusty-woolly ; 

 the flowers small and white in a terminal umbel-like corymb, which is developed 

 from a large scaly bud, its thin scales or bracts deciduous when the flowers are 

 developed. 



