Since Sir Charles Bunbury described the Flora of Nagpúr, drawing the most rational conclusions, and since Messrs. Oldham and Morris illustrated a portion of the Flora of the Rajmahal Series in the Rajmahal Hills, nothing of importance has come before the public regarding the Flora of the Indian Plant-bearing Series, although the then abundant material has subsequently been considerably increased through the exertion of the officers of the Geological Survey of India, who have also done much to explain the geological relations of the whole Series.