Calvatia cyathiformis (Bosc) Morgan J. Cincinnati Soc. Nat. His., 1890

Gunasekaran, Senthilarasu, Chinnarajan, Ravindran & Parasnis, Anjali, 2018, Notes on Indian species of Calvatia and Langermannia including Calvatia natarajanii sp. nov., Phytotaxa 362 (2), pp. 160-172 : 163

Calvatia cyathiformis (Bosc) Morgan J. Cincinnati Soc. Nat. His. 12(4): 168 (1890).

Distribution:— CHATTISGARH (Ahlawat et al. 2008); GUJARAT: Ahmadabad ( Anand Rao 1964); HIMACHAL PRADESH: Chambaghat, Solan( Sharma et al. 1978); MAHARASHTRA: Khandala ( Nair & Patil 1977),Amravathi region, Taponeshwar, Tapovan Goshala ( Hedawoo & Mohite 2008); UTTAR PRADESH: Varanasi & Raibareli ( Khare 1976); WEST BENGAL: Howrah, Mahisgote, Sankrail block ( Chakraborty et al. 2012).

This is one of the most easily recognized and widely reported species from India. This species is closely related to C. fragilis . However, C. fragilis is clearly distinguished from C. cyathiformis in the field by having a distinctly plicate fruitbody with reduced to almost nil subgleba. Microscopically, C. cyathiformis differs from C. fragilis in the strongly echinate basidiospores with broad spines that are up to 2 μm long, whereas, C. fragilis has echinate spores with shorter spines up to 0.5 μm long ( Cortez et al. 2012).