Reid, D., On the exceptional abundance of Verpa conica with notes on unusual occurrence of other fungi, Bulletin of the British Mycological Society 11(2): 131-136 (1977)
Verpa conica, 11/05/1873, England, West Norfolk (VC:28), Terrington St Clement, TF5420, col.: anon, id: anon, FRDBI No.: 134779.