Bhutanthera albovirens Renz – the discovery of the species from the state of Sikkim adds one more rare species to the list of orchids of Sikkim-Himalayas. Before its discovery by the author from the high hills of Sikkim, the species was believed to be a native of Bhutan. The book, TERRESTRIAL ORCHIDS, presents the species in bloom, with its characteristics and habitat explained in detail, interestingly this is the second instance of the species been photographed in bloom.
Aphyllorchis montana Rchb.f. – a very rare species seldom located across its habitat; never photographed from the region since its mention by Sir George King and Robert Pantling in their monumental work of 1898. The book, TERRESTRIAL ORCHIDS, presents the first ever documentary evidences of the species from the region.
Anthogonium gracile Wall. ex Lindl. – not an uncommon species. However, the species was included in the book, TERRESTRIAL ORCHIDS, because the author was able to locate its rare white as well as a new yellow to pale brown forms.