Acknowledgements
The authors are thankful to the Director, Botanical Survey of India
(BSI), Kolkata and the Head of Office, Central National Herbarium,
Botanical Survey of India, Howrah for facilities and encouragement. The
first author is grateful to Mr Mangal Hembram of Banagram, near Garh
jungle, West Bengal, for help in field survey. Two of the authors (SS
and SC) thankfully acknowledge the Ministry of Environment, Forests and
Climate Change, New Delhi for financial assistance to the project
‘Systematics and conservation of Indian orchids with special emphasis to
Himalayan species’ under Himalayan Research Fellowship scheme of
National Mission on Himalayan Studies. Dr Harry Smith, Curator-Botanist,
Asia Team, Science Collections, Herbarium, Royal Botanic Gardens, Kew,
is thankfully acknowledged for sending digital image of the K-drawing
(K001535002) and type-image of G. rariflorum (K), and Dr Henry
Noltie, Royal Botanic Garden, Edinburgh, for his useful comments. The
authors are thankful to Dr Dinesh Kumar Agrawala, Scientist E, BSI for
providing an important literature and to Dr Subir Bandyopadhyay, retired
Scientist, BSI for his useful comments.