382 PHANEROGAMOUS PLANTS. 



7. RHODODENDRON, Linn. 

 1. Rhododendron albiflorum, Hook. 



Rhododendron albiflorum, Hook. Fl. Bor.-Am. 2, p. 43, t. 33, & in Bot. Mag. t. 

 3670 ; DC. Prodr. 7, p. 727. 



Hab. Cascade Mountains, Washington Territory; the most westerly 

 station known. A handsome shrub, bearing a profusion of white 

 flowers. Anthers 4-celled in the bud. 



2. Rhododendron macrophyllum, Q. Don. 



B. foliis oblongis utrinque acutis subcoriacevs pedicellisque glaberrimis 

 subtus minute reticulatis ; floribus racemoso-corymbosis calycis lobis 

 brevissimis obtusis; ovario setoso; filamentispidveruhnlo-pubescentibus. 



R. macrophyllum, G. Don, Gen. Syst. 3, p. 843. 



R. maximum, Hook. Fl. Bor.-Am. 2, p. 43 (planta Oregona). , 



Hab. Puget Sound, Washington Territory; in woods; not com- 

 mon. — A noble species, resembling R. maximum but quite distinct. 

 It is usually 10 to 15 feet high. Leaves 6 or 7 inches long, and 2 or 

 more inches wide, perfectly smooth on both sides; the under surface 

 paler and very minutely reticulated, tapering at the base to a stout 

 terete petiole which is an inch or more in length, the margins (in 

 dried specimens) slightly and very narrowly revolute. Flowers 10 to 

 12 in a terminal corymbose raceme, about one-third smaller than those 

 of B. maximum. Pedicels unequal in flower, but nearly equal and 

 elongated (2 inches) in fruit. Calyx reduced to a mere 5-toothed 

 border. Corolla campanulate, 5-lobed ; the lobes oblong and rounded. 

 Stamens 10 : filaments unequal : anthers oblong. Ovary oblong, 

 clothed with rufous short bristly hair : style longer than the sta- 

 mens : stigma small, simple, obscurely 5-angled. Capsule about 

 three-fourths of an inch long, smooth. Seeds oblong, compressed, 

 narrowly winged all around with a fan-like crenated appendage at the 

 radicular extremity, and acute at the other. Embryo very slender. 



