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Summary. Aloe descoingsii Reynolds, the smallest Aloe species in the world, endemic to Madagascar, is described and illustrated. Its history, ecology and conservation status are discussed. Its habitat is shown.

Summary. Aloe parvula A. Berger, a miniature aloe endemic to Madagascar, is described and illustrated. Its ecology and conservation status are discussed. A typical habitat in the Itremo Massif is shown.

Summary. Aloe compressa H. Perrier, a miniature aloe endemic to Madagascar, is described and illustrated. Its ecology and conservation status are discussed.

Summary. The habitats and distribution of four Aloe species from Madagascar are described and illustrated, and their conservation status is discussed.

A revision of the Leguminosae of Madagascar is soon to be completed, covering some 670 species (c. 565 native to Madagascar of which 449 endemic) including 6 new genera and 121 new species. It has provided the basis for a pilot project applying computer mapping (GIS) to the investigation of ecological parameters which determine the extent of species distributions. Vegetation maps, based on these parameters, are being used for planning and managing the conservation of biodiversity in Madagascar.

Summary. The history, taxonomy, distribution, ecology and cultivation of Cynorkis gibbosa (Orchidaceae), an endemic of Madagascar, are discussed and a full botanical description is provided.

Summary. The genus Adansonia (Bombacaceae) is reviewed, with particular reference to those species native to Madagascar. Their taxonomy, distribution, habitat, pollination, fruit-animal interactions, seed dispersal and economic importance are discussed.

Summary. A collaborative project between the Royal Botanic Gardens, Kew and the Pare de Tsimbazaza Botanical Garden to cultivate and propagate the endemic orchids of Madagascar is described.