Flechten aus Mitteleuropa
By: Lettau
Published: 1940
Place of publication: Dahlem bei Berlin
Language: ger
Number of pages: 126
Notes: Repertorium specierum novarum regni vegetabilis, Beifefte/Band 119, 1, 2, p. 1-43, 45-126, 1940.

Includes no. 1 Spheconisca pittocopa to no. 69 Thelenidia monosporella; no. 70 Thelidium absconditum to no. 204 Thelidium Erichsenii.