[685] Hue 1911².

[686] Tulasne 1852.

[687] Bornet 1873.

[688] Bonnier 1889².

[689] Maire 1905.

[690] Neubner 1893.

[691] Brefeld 1889.

[692] [See p. 143.]

[693] Bornet 1873.

[694] Bornet’s observations have not been repeated, and it is possible that he may have been dealing with a parasitic hyphomycetous fungus.