Another peculiar name: both glottis and lingua mean tongue, phyllum = leaf and forme = yes, indeed. So, in other words: the tongue leaf with the tongue shape.
The plants occur in the Oudtshoorn-Calitzdorp area, where the rainfall is 100-200 mm per year. They usually grow under shrubs on loamy or sandy soil with some quartzite and flower in late autumn and winter (March-June).