The present paper is preliminary to a monographic treatment of the genera Acrolejeunea (Spruce) Schiffn. and Schiffneriolejeunea Verd. The main purpose of this paper is to reestablish Acrolejeunea as the nomenclaturally correct name of a genus of Lejeuneaceae to which in this century commonly the name Ptychocoleus Trev. was applied.

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Journal Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht
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Citation
Gradstein, S. R. (1974). Studies on Lejeuneaceae subfam. Ptychanthoideae. I. Nomenclature and Taxonomy of Ptychocoleus, Acrolejeunea and Schiffneriolejeunea. Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht, 409(1), 327–336.