[695] Steiner 1901.

[696] Müller 1881.

[697] Wainio 1890, II. p. 27.

[698] Fée 1873.

[699] Müller 1890.

[700] Tulasne 1851.

[701] Dillenius 1741.

[702] Hedwig 1784 and 1789.

[703] Acharius 1810.

[704] Fries 1831.