[156] Persoon 1794, p. 17.
[157] Sprengel 1804, p. 325.
[158] Wallroth 1825, I.
[159] Wallroth 1825, I., p. 303.
[160] Fries 1831, pp. lvi and lvii.
[161] Kützing 1843.
[162] Thwaites 1849, pp. 219 and 241.
[163] Flotow 1850.
[164] Sachs 1855.
[165] Itzigsohn 1855.