Corda, “Icones Fungorum,” vol. iii. fig. 91.
Corda, “Icones,” vol. i. fig. 25.
Berk. and Br. “Ann. Nat. Hist.” No. 415.
Currey, in “Philosoph. Trans. Roy. Soc.” (1857), pl. 25.
Tulasne, “On the Reproductive Apparatus of Fungi,” in “Comptes Rendus” (1852), p. 841; and Tulasne, “Selecta Fungorum Carpologia,” vol. iii.