Chirayathumadom Venkatachalier Subramanian (11 August 1924–5 February 2016), popularly known as CVS, was an Indian mycologist, taxonomist and plant pathologist, known for his work on the classification of Fungi imperfecti, a group of fungi classified separately due to lack of specific taxonomic characteristics. He authored one monograph, Hyphomycetes: An Account of Indian Species, Except Cercosporae and three books, Hyphomycetes, taxonomy and biology, Moulds, Mushrooms and Men and Soil microfungi of Israel, besides several articles published in peer reviewed journals. He was a recipient of many honours including the Rafi Ahmed Kidwai Award of the Indian Council of Agricultural Research, the Janaki Ammal National Award of the Government of India and seven species of fungi have been named af