A. H. R.  Grisebach, ?Burmanniaceae?, in Flora of the British West Indian Islands, London: Lovell Reeve & Co., 1864, p. 606.

A. H. R.  Grisebach, ?Gentianeae?, in Flora of the British West Indian Islands, London: Lovell Reeve & Co., 1864, pp. 422-426.