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1 July 2013 Riella bialata Trab. (Riellaceae, Marchantiophyta): A New Addition to the European Liverwort Flora
Felisa Puche, José Gabriel Segarra-Moragues
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Abstract

Riella (Riellaceae, Sphaerocarpales) is a genus of aquatic liverworts with a disjunct worldwide distribution in areas of seasonal Mediterranean-type climates. Its centre of diversity is located in the Mediterranean basin, where about half the species number of the genus is concentrated. In the course of a worldwide revision of the genus Riella, plants from a monoicous species with wingless, not papillose and smooth involucres were found in two distant Iberian localities. These plants showed a geminate dorsal wing, unlike the single wing occurring in the remaining species of the genus. This character unambiguously assigns these populations to R. bialata, a species known to date from a single collection in its Algerian type locality. Riella bialata is thus reported as new to Europe. Fresh materials enabled detailed morphological analyses, and the Iberian materials are extensively described and illustrated herein.

© 2013 Adac. Tous droits réservés
Felisa Puche and José Gabriel Segarra-Moragues "Riella bialata Trab. (Riellaceae, Marchantiophyta): A New Addition to the European Liverwort Flora," Cryptogamie, Bryologie 34(3), 341-352, (1 July 2013). https://doi.org/10.7872/cryb.v34.iss3.2013.341
Published: 1 July 2013
JOURNAL ARTICLE
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