ASSAM AND BOOTAN. 365 
obovate, obtuse, twelve- to sixteen-celled, glutinous, but not pubescent, 
2 inches long, by about 1 inch wide. The flower quite equal in size 
to the magnified figure (fig. 2) of the flower of R. Falconeri, given by 
Sir William Hooker on plate 11 of the ‘Rhododendrons of Sikkim- 
Himalaya. It was no doubt taken by Dr. Hooker for a variety of R. 
Falconeri. 'The loose fewer-flowered corymb and longer more pubes- 
cent leaves, as well as the fewer-celled capsule, seem to distinguish it. 
It is nearly the most majestic tree of the genus; allied to it; no doubt, 
will also be the following, of which I, as yet, know only the leaves of 
two plants, brought as well as the preceding from Bootan by Mr. Booth. 
19. RHODODENDRON VENOSUM, Nutt. 
Arboreum: foliis elliptico-ovatis subdilatatis, basi rotundatis angusti- 
oribus, pulverulentis, demum subglabris, subtus albis, reticulatis, ad- 
presso-tomentosis, penninerviis. 
Has. In the mountain forests of Bootan, beyond the valley of the 
Bhorelli river. 
Apparently a tree. Leaves usually elliptic-ovate, acute, or some- 
times approaching obovate, pulverulently tomentose for a considerable 
time, very strongly reticulated and pennately nerved both above and 
below ; the pubescence below nearly white and close-pressed. Bud- 
scales dilated, nearly smooth, with short points. The flower is un- 
known. 
This kind appears to have come up in several collections with the 
seeds of R. Falconeri, distributed by Dr. Hooker. 
20. RHODODENDRON PLANIFOLIUM, Nutt. 
Arboreum: foliis amplis, elliptico-ovatis acutis, basi rotundatis, planis, 
pulverulentis, pinnatim-nervosis, reticulatis, subtus subferrugineis, 
tomento intricato. 
Has. Mountain forests of Bootan. It appears also, from the herbarium 
of Sir William Hooker, to have been found by the late Mr. Griffith 
at Yalloong in the same country, growing at an elevation of 10,000 
feet above the sea-level. The knobbed or clustered matting of the 
pubescence beneath is a very peculiar character. . 
A single living plant of this apparently fine species is, with the ex- 
ception of the dried specimen above mentioned, all that I yet know 
concerning it: its spreading, wide, and large foliage gives it a peculiar 
