998 DR. A. В. RENDLE ON PLANTS 
An Account of the Plants collected on Mt. Ruwenzori by Dr. A. G. Е. 
Wollaston. By Dy) A. В. RBADLE, M.A., F.L.8., E. G. Byker, F.L.8. 
and S. Le M. Мооке, В.Бе., F.L.S. 
(PLATEs 16-19.) 
(Read 20th June, 1907.) 
THE plants enumerated were collected by Dr. A. G. F. Wollaston on the 
recent expedition to Mt. Ruwenzori conducted by Mr. В. В. Woosnam, for the 
purpose of making natural history collections ; these collections are now at the 
British Museum. Dr. Wollaston reached a height of over 15,000 ft., on one 
of the peaks which has been named in bis honour by the Duke of Abruzzi. 
А geographical account of the mountain-range known as Mt. Ruwenzori, with 
an excellent map, will be found in the Duke of Abruzzi’s paper entitled the 
“Snows of the Nile " in the Geographical Journal, xxix. (1907) pp. 121-147. 
PREVIOUS COLLECTORS. 
Mt. Ruwenzori was discovered by Sir Henry Stanley, who saw the moun- 
tain to the south from Lake Albert Edward in 1888 and in the following year 
traversed its western slopes ; one of his companions, Lieut. Stairs, climbed to 
а height of 10,700 ft. on its north-western spurs and collected 38 plants, of 
which the generic names are enumerated on p. 258 of H. M. Stanley’s 
“In Darkest Africa. The first botanical collection of any extent made on 
the Mt. Ruwenzori range was that of Dr. Stuhlmann in 1891. Heascended the 
valley of the Butagu on the west of the chain to a height of 13,300 feet. 
Mr. G. F. Scott Elliot in 1895 made five excursions towards the central ridge, 
approaching it on the east by the valleys of Yeria, Wimi, Mobuku, and 
Nyamwamba, and on the west from the Butagu valley. In the last he reached 
13,000 ft. Later Sir H. Johnston reached a height of about 15,000 ft. on 
the east slopes of the peak which he named Kiyanga. On this expedition 
some plants were collected by Mr. Doggett and presented to the Royal 
Gardens, Kew. Several of these are identical with Dr. Wollaston’s plants. 
In 1906 the Duke of Abruzzi led the successful expedition on which so many 
of the different peaks were scaled for the first time. He was aecompanied by 
Dr. Roccati as collector. Collections have also been recently made by 
Mr. Dawe, of the Botanie Gardens at Entebbe. 
NOTES ON THE VEGETATION. 
We are indebted to Dr. Wollaston's notes for information on the types of 
vegetation at various altitudes ; we have added a general account of the 
results obtained in working out his collections. The plants were mainly 
collected from two camps: one at about 3500 ft. altitude on the south-east 
slopes of the range, between the mountains proper and Lake Ruisamba ; the 
other at an altitude of 6500 feet in the Mubuku valley, the most important 
valley on the east side of the range. Expeditions were made to intermediate 
