[535] Hoffmann 1784.

[536] Hedwig 1784.

[537] Acharius 1810.

[538] Hornschuch 1821.

[539] Wallroth 1825.

[540] Meyer 1825.

[541] Sprengel 1804.

[542] Luyken 1809.

[543] Persoon 1801.

[544] [See also p. 166.]