232 DR. A. B. RENDLE ON PLANTS 
at about 8500 feet and continue up to 10,000 ft., while on the western slopes 
they begin at 7000 feet. 
9000—10,000 feet. The big tree-heaths begin about 9500 feet, their branches 
are covered with long wisps of grey lichen. A good many terrestrial orchids 
were found at this level (Epipactis africana, Cynorchis anacamptoides, Satyrium 
crassicaule and Polystachya gracilenta), all endemic species previously collected 
at similar altitudes by Scott Elliot and Stuhlmann, and two new species of 
Polystachya were found on rocks, while the epiphytic Angraecum Scotellit, 
found previously by Scott Elliot, was again collected. A big bushy Jmpatiens, 
the endemic species Z. runssorensis with a coral-red flower, was alsofound, Ferns, 
notably polypodiums and a long narrow-leaved hart^s-tongue (?), are numerous, 
and the biggest of the alchemillas, A. rwwenzoriensis, forms large silvery beds. 
А Helichrysum (H. argyrocotyle, sp. nov.) in the moist places and a small 
yellow orchid ( Polystachya Doggettii) on the rocks contribute agreeable touches 
of colour. 
In addition, the following novelties were collected at 9000 ft. :— Senecio 
jugicola, Coleus latidens, Pycnostachys Elliot, and а remarkable amaryl- 
lidaceous plant which seems to represent a new genus ( Choananthus) combining 
in some respects the characters of /7emanthus and Cyrtanthus. At 10,000 ft. 
were found Thalictrum rhynchocarpum, а species widely spread on the moun- 
tains of tropical and South Africa, a variety of Cotyledon Umbilicus known 
also from the mountains of Abyssinia and Kilimanjaro, several endemic 
species (Rubus Doggettit, Solanum runsoriense, Mimulopsis Flliotii and Arisema 
ruwenzoricum), and a new species, Coleus clivicola. 
10,000-11,000 feet. This is the zone of moss par excellence. It forms 
round cushions on the trees (most of them rica arborea) and masses two feet 
deep on the ground and amongst the fallen logs, where the hyraxes make their 
burrows. Two tree-lobelias (L. Deckenit and L. Stuhlmanni) appear at this 
level, also a fine tree-hypericum with а big yellow flower. А blue violet 
(Viola abyssinica) is found in the more open spaces. At 11,000 ft. were found 
two new species, Conyza montigena and Calamintha parvula, and the widely 
spread north temperate Cerastium vulgare. 
11,000-12,000 feet. Helichrysums (including a new species /7. Wollastoni ), 
tree-lobelias, tree-heaths and tree-senecios are the most conspicuous plants at 
this altitude, though the two latter attain. their greatest growth above 12,000 
feet. A handsome Rubus (R. runssorensis) with a pink flower and a large but 
tasteless fruit is fairly abundant, and а small Sedum (S. ruwenzoriense, sp. nov.) 
grows on the rocks. The plants found at 12,000 feet include Alchemilla 
geranioides, а species allied to A. cinerea from Kilimanjaro, Alchemilla 
argyrophylloides, a new species allied to A. argyrophylla from Kilimanjaro, 
Senecio sycephyllus (previously collected by Scott Elliot), the tree-senecio, 
S. adnivalis allied to 5. Johnstoni from Mt. Kilimanjaro and S. keniense from 
Mt. Kenia ; several alpine species which have been found on the mountains of 
