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Ambrella is a monotypic genus in the orchid family. The single species, Ambrella longituba is endemic to Madagascar. The type specimen was collected and described by Joseph Marie Henry Alfred Perrier de la Bâthie in 1934.
This species is native to the semi-dry forests of the Northern tip of Madagascar at altitudes of 800 m above sea level. It has been found growing on branches of Viguieranthus alternans (Benth.) Villiers (syn. Calliandra alternans Benth.), which is the preferred phorophyte of Ambrella longituba. Its pollinators are corrently unknown. However, H. Perrier De La Bathie speculates the narrow tube of the labellum only allows a few very special insects to fertilise the flowers, and he states this explains the rarity of the species. Flowering occurs in November.
Text excerpted from the Wikipedia article Ambrella longituba by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
