Lenz, H. O., “Die Nützlichen und Schädlichen Schwämme,” p. 93.
Berkeley, M. J., in “Intellectual Observer,” No. 25, pl. 1.
Berkeley, M. J., “Outlines of British Fungology,” p. 293.
Berkeley, M. J., “Introduction to Crypt. Bot.” p. 347.
Cooke, M. C., “A Plain and Easy Guide,” &c., p. 96.