VEGETATION OF UGANDA. 537 
(June). Below the platean, on the plains near the lake, the 
maximum temperature ranged from 90° to 92°, and the minimum 
from 65° down to 63°. 
Toro. 
This district is also in the Western Province, and lies south 
of Lake Albert, extending down to Ankole, being bounded on 
the west by the Congo Free State. It lies from about 3000 feet 
altitude to Mt. Ruwenzori, the highest peak of which yet reached 
is 15,000 feet. 
The portion of Toro lying from 4000 to 5900 feet is physically 
somewhat similar to certain parts of Uganda proper, where high 
grass and swampy streams choked with papyrus are the charac- 
teristic features, This part of Toro, as represented by Fort 
Portal, has a mean maximum temperature of 75° and a mean 
minimum of 59:9?. The extreme minimum during 1904 was 
513°. The average rainfall is 53:14 inches, falling on an average 
on 134 days in each year. 
In the east-central part of Toro, forest (Kibale Forest) covers 
an area of nearly two hundred square miles. It extends from 
east of Fort Portal down to the northern extremity of Lake 
Ruisimba. Its characteristic trees are Maba abyssinica, Doli- 
chandrone platycalyx, Parinarium excelsum, Ehretia sylvatica, 
Symphonia globulifera, Cola cordifolia, Chrysophyllum albidum, 
Croton zambesicus, Milletia ferruginea ; also the following new 
species: Balanites Wilsoniana, Odyendyea longipes, Mimusops 
ugandensis, Lovoa brachysiphon, Dactylopetalum ugandense, and 
Warburgia ugandensis. 
Lying to the south-west of this forest at a lower altitude 
occurs another forest, which is remarkably free of undergrowth 
and composed almost entirely of Cynometra Alexandri, an 
immense gregarious tree, also found in the Semliki Valley and 
Unyoro. 
The northern extremity of Lake Ruisimba is hid from view on 
the plains by several hundred acres of Typha angustifolia. The 
flat country lying west of these forests and the lake is of a low 
altitude, and is studded with Borassus palms (B. flabellifer, var. 
ethiopica) Important rivers watering these plains are the 
Mubuku and Luimi, which rise in the Ruwenzori Range. 
