san? 
100 BALFOUR—NEW SPECIES OF RHODODENDRON. 
squaremm. Then in the former the style is shorter not longer 
than the longest stamens. From Rh. trichocladum, Franch. itself 
the calyx without bristles separates it. From Rh. xanthinum, 
Balf. f. et W. W. Sm. the absence of hairs on outside of corolla 
is a diagnostic mark. 
Rhododendron coryphaeum,* Balf. f. et Forrest. (Grande.) 
Robust shrub with thick branches, those a year old about 
I cm. in diameter coated with a whitish crustaceous indumentum 
of cobwebbed more or less agglutinate hairs traces of which 
remain on the older stems. Foliage-bud unknown. Leaves 
epetiolate as much as 25 cm. long thickly leathery broadly 
oblanceolate or narrowly oblong-obovate broadest at the apex 
and there as much as 9 cm. broad then tapered gradually to 
the base, apex rounded or subtruncate sometimes slightly retuse, 
mucronate the mucro rounded tuberculate very short sometimes 
turned downwards, margin broadly cartilaginous slightly re- 
curved, at the base the lamina is prolonged downwards to point 
of insertion of leaf where it may be nearly 2 cm. broad the basal 
portion simulating a winged petiole; upper surface mat green 
somewhat rugulose shagreened glabrous, the midrib grooved 
and lined with vestiges of a juvenile hair-indumentum at the 
base passing into a broad ungrooved wrinkled ridge recalling 
e surface of a petiole, primary veins some 14-16 on each side 
emerging from midrib at an acute angle and sharply ascending 
slightly grooved ; under surface white or grey-white covered bya 
thin indumentum of long branching intricately interwoven hairs 
* xoovgaioc, leading—in allusion to its size 
{| Rhododendron coryphaeum, Balf. f. et ‘Forrest t.—Frutex robustus ramis 
crassis indumento sordide albido crustaceo plus minusve indutis. Folia ad 25 
s n s' 
positi, rhachi brevi vix 2 cm. longa; bracteae exteriores steriles rotundatae 
viscidae, intimae fertiles oblongo-spathulatae extus intusque sericeae ; 
bracteolae breves circ. 5 mm. longae pilosae; icelli circ. 2 cm. longi indumento 
. Semina brunnea complanata anguste arillata et crista membranacea 
chalazali notata. 
