168 
RHODODENDRON arrorevm. 
Tree Rhododendron. 
: DECANDRIA MONOGYNIA.—Nat. Orv. ERICEA. 
Gen. Cuar.—Cal. 5-partitus. Cor. subinfundibuliformis. Stam. declinata, 
Caps. 5-locularis. 
Rhododendron arboreum; foliis obovato-lanceolatis supra glabris sub- 
tus argenteis, floribus capitatis, corolla limbo undulato denticulato, 
germinibus pubescentibus, staminibus stylo brevioribus. 
Rhododendron arboreum, Smiru, Ex. Bot. t. 6.—Linpt. in Bot. Reg. t. 890, 
_ —Don, Prodr. Fl. Nep. p. 154. 
Rhododendron puniceum, “ Rox. Hort. Beng. 33.” 
Trunk erect, reaching to several feet in height, bearing many spreading 
branches, in irregular clusters from the extremities. Leaves from the 
top of the annual shoots, obovato-lanceolate, coriaceous, narrow at the 
base, subacute at the point, glabrous, green above, silvery white be- 
neath, the effect of excessively short and dense shining tomentum ; mid- 
rib strong, lateral veins parallel. Petioles short, rough, green and 
grooved above, red beneath. 
Flowers in large and terminal dense, hemispherical clusters or heads. Pe- 
duncles short, white, downy. Bractea 3 at the base of each, caducous: 
the lowest half the length of the corolla, large, linear-oblong, white, — 
silky and membranaceous; the other two much smaller and narrower, 
white, downy, especially at the apex. Calyx small, 5-toothed. ~Corolla 
campanulato-infundibuliform, oblique, of a rich vermilion colour, vein- 
ed and marked with many dark spots or lines on the upper and inner 
side; at the base with 5 prominences or gibbosities, which form so 
many nectaries within, of which the upper one is the largest, and: distils 
a great quantity of a sweetish transparent fluid; at the extremity cut 
into 5 rounded lobes, crenate and waved, lower segments the narrowest. 
Stamens 10, declined: filaments of unequal length, filiform, white; an- 
thers small, brown, incumbent, obovate, 2-celled, the cells opening each 
with a pore at the extremity ; pollen yellow ; granules in threes. Pis- 
til: germen small, ovate, greenish, ribbed, pubescent ; style filiform, 
white, as long as the limb of the corolla, and longer than the filaments ; 
stigma capitate, red 
VOL. Ill. 
