VEGETATION OF UGANDA. 539 
by Lobelia Deckenii, a species that grows gregariously in morass ; 
L. rhynchopetalum is found from about 12,000 feet up to the 
glaciers. 
A new species of arboreal Senecio (S. adnivalis) is found from 
about 10,000 feet up to the glaciers, being most abundant in the 
flat morass in the portion of the valley immediately beneath the 
glaciers. 
Three species of Alchemilla are found on the mountain, two 
of which are new. A. geranioides (n. sp.) is found from 8000 to 
11,000 feet; A. Stuhlmannii from 9000 to 10,000 feet, and 
A. ruwenzoriensis (n. sp.) from 10,000 to 11,000 feet. The latter 
rambles widely, forming conspicuous carpets on the mountain, 
its silvery foliage harmonising with the silvery micaceous rocks 
and grey weeping Usnea that gracefully hangs from Erica arborea 
and Senecio adnivalis. 
The filmy ferns common in the upper portion of the mountain 
are Hymenophyllum Meyeri and H. ciliatum, together with 
Polypodium punctatum, var. rugulosum. 
The last form of vegetation I observed on the mountain 
(excluding the lower forms) was a solitary grass, a new species 
of Poa (P. glacialis). 
The following are the temperatures registered by me on the 
mountain :—at 8500 feet, maximum 56°, minimum 48°; at 9750 
feet, maximum 52°, minimum 38" when ascending, on descending 
327. At the base of the glacier the temperature, as would be 
expected, was at freezing-point at eight o'clock in the morning. 
On the upper region of the mountain raiu falls almost daily in 
the form of heavy mists, and the vegetation throughout the day 
is usually dripping with moisture. 
SEMLIKI VALLEY. 
The Semliki Valley lies between the Ruwenzori Range and the 
Bulega and Mboga hills. It is watered by the Semliki River, 
that flows into the south end of Lake Albert. The northern 
part of the valley near the lake is of grassland (mostly Zmperata 
arundinacea); it lies at an average altitude of about 2500 feet, 
and has a remarkably fertile soil. Further up the river is a 
dense forest of majestic trees, covering the undulated Bwamba 
country ; it is inhabited by forest tribes, mainly the Baamba 
people, and forms part of the great Congo Forest. It lies at an 
average altitude of nearly 3000 feet. 
