04/09/2014
Ansellia
Text by Anthony Grohovaz
Photography by Lourens Grobler
The genus is named after John Ansell, an English botanist, who found the first specimens in 1841 on the Fernando Po Island in West Africa. This orchid is native to tropical and southern Africa, found alongside coasts and rivers in the canopy of trees, usually at elevations lower than 700m (occasionally up to 2,200m).
Known locally as the Leopard Orchid and common in the Kruger National Park, this is a large epiphyte, generally attached to the branches of tall trees, occasionally terrestrial. This robust orchid can grow very large, sometimes with an estimated weight of over a tonne. Even eagle owls (Bubo bubo) have been seen to make their nest in such a clump.
The white, needle-like aerial roots are characteristic of this orchid and they point upwards, taking the form of a trash basket, catching leaves and detritus from which it obtains nutrients. These plants are shy to flower in cultivation unless they receive very bright light of around 2000 foot candles and are given a dry rest for about 6 weeks in the autumn. In habitat, the plants can go periods of several months without water and are very drought tolerant, but the plants tend to perform better if kept evenly moist throughout the year. Plants which are receiving enough light will take on a yellowish coloration in the leaves.
This species is widespread across Africa and wide variability of flower shape, colour and markings may be seen across its range. There has been some innovative breeding between the various ecotypes and remarkable colour forms are now appearing.