Afroalpine Carex Bog
In the lower, more level parts of the afroalpine belt where drainage is impeded there are bogs dominated by endemic, tussock-forming sedges. The main dominants are either Carex monostachya or C. runssoroensis (Cyperaceae), but the habitat is given a strange appearance by the presence of endemic giant lobelias (Campanulaceae). As the main sub-dominants these include Lobelia bequaertii on Ruwenzori, L. elgonensis on Elgon, L. sattimae of Aberdare and L. deckenii on Kilimanjaro. Other endemic plants may include Kenichloa chionogeiton (Poaceae), Luzula abyssinica, L. johnstonii (Juncaceae), Ranunculus stagnalis, R. volkensii (Ranunculaceae), Romulea keniensis (Iridaceae), Sagina afroalpina (Caryophyllaceae), Senecio transmarinus (Asteraceae) and Subularia monticola (Brassicaceae). The lower layers, however, are mainly dominated by sphagna and other bryophytes including endemic species such as Meesia kenyae and Scapania hedbergii on Mt Kenya, and Sematophyllum elgonense on Elgon.
References
Brenan, J. P. M. 1978. Some aspects of the phytogeography of tropical Africa. Annals of the Missouri Botanical Garden, 65: 437-474.
Burtt, B. D. 1934. XVII – A. Botanical reconnaissance in the Virunga volcanoes of Kigezi Ruanda, Kivu. Bulletin of Miscellaneous Information, Royal Botanic Gardens, Kew. No. 4: 145-165.
Grimshaw, J. M. 1998. Disturbance, Pioneers and the Afromontane Archipelago. In: Chorology, Taxonomy and Ecology of the Floras of Africa and Madagascar. Eds. J. M. Lock and D. F Cutler. Royal Botanic Gardens, Kew.
Hedberg, O. 1951. Vegetation belts of the east African mountains. Svensk Botanisk Tidskrift, 45: 141-202.
Hedberg, O. 1957. Afroalpine Vascular Plants - A Taxonomic Revision. Uppsala
Hedberg, O. 1964. Features of Afroalpine plant ecology. Acta Phytogeographica Suecica, 49: 1-144.
Hedberg, O. 1965. Afroalpine Flora Elements. Webbia, 19: 519-529.
Hedburg, O. 1986. Origins of the Afroalpine flora. In: High Altitude Tropical Biogeography. Eds F. Vuilleumier and M. Monasterio. Oxford University Press and American Museum of Natural History.
Schmitt, K. & Bayreuth, E. B. 1992. On the afroalpine vegetation of the Ruwenzori Mountains, Uganda. Phytocoenologia, 21: 313-332.
Snowden, J. D. 1933. A study in altitudinal zonation in south Kigezi and on Mounts Muhavure and Mgahinga. Uganda. Journal of Ecology, 21: 7-27.
White, F. 1978. The Afro-Alpine Region. In: Biogeography and Ecology of southern Africa. Ed. M. J. A. Werger. Dr W Junk Publishers. The Hague.
White, F. 1978. The Afromontane Region. In: Biogeography and Ecology of southern Africa. Ed. M. J. A. Werger. Dr W Junk Publishers. The Hague.
White, F. 1983. The Vegetation of Africa. UNESCO.