N.  Wallich, ?Vanilla pterosperma?, in Numerical list of dried specimens of plants in the Museum of the Honl. East India Company /which have been supplied by Dr. Wallich, superintendent of the botanic garden at Calcutta ("Wallich Catalogue"), Calkutta: Manuscript, 1832, p. No. 7402.

N.  Wallich, ?Monotropa nepalensis?, in Numerical list of dried specimens of plants in the Museum of the Honl. East India Company /which have been supplied by Dr. Wallich, superintendent of the botanic garden at Calcutta., Calkutta: Manuscript, 1832, p. No. 7252.