[555] This species of Collema has been described as Collemodes Bachmannianum by Bruce Fink 1918.
[556] F. Bachmann 1913.
[557] Wainio I. 1890.
[558] Wolff 1905.
[559] Stahl 1877.
[560] Forssell 1885².
[561] Zukal 1887, p. 42.
[562] Borzi 1878.
[563] Lindau 1888.
[564] Mäule 1891.