Honours
- Degree of D. Sc., Cambridge University, 1929.
- Vice-President, Palaeobotany section, 1930 and 1935.
- Fellow of the Royal Society, London, 1936.
- General President, Indian Science Congress, 1940.
- President, National Academy of Sciences, India, 1937-1939 and 1943-1944.
- President, International Botanical Congress, Stockholm, 1950.