Background and Aims:

Although the bryoflora of Argentina has been extensively studied, there are still environments to explore and taxa to record. The objective of this work was to report a new record, Crossidium geheebii, for the American continent.

Methods:

Specimens were collected in the Argentine Patagonia. Using an optical microscope, the morphology and anatomy of the leaves, stems and sporophytes were observed.

Key results:

A brief description, discussion, distribution map and illustration of the reported species are presented. Moreover, a key to identify the species of the genus Crossidium with distribution in America is included.

Conclusions:

Crossidium geheebii is reported for the first time for the American continent.

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