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30 November 2020 New molecular and morphological evidences favor a combination of Blechnum bakeri C.Chr. in Cranfillia Gasper & V.A.O.Dittrich (Blechnaceae, Polypodiopsida), thus extending the distribution of Cranfillia to Madagascar and East Africa
Lucie Bauret, Rubén Vázquez, Sonia Molino, Myriam Gaudeul, France Rakotondrainibe, André Luís de Gasper, Germinal Rouhan
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Abstract

In the fern family Blechnaceae, Cranfillia Gasper & V.A.O.Dittrich and Austroblechnum Gasper & V.A.O.Dittrich are two genera recently described from the splitting of Blechnum L. The assignation of species to Cranfillia or Austroblechnum could be difficult due to their morphological similarities. Focusing on Austroblechnum bakeri (C.Chr.) Gasper & V.A.O.Dittrich, and based on new molecular and morphological evidence, we show that Austroblechnum bakeri actually belongs to the genus Cranfillia as Cranfillia bakeri (C.Chr.) Vázquez Ferreira & S. Molino, comb. nov. This new combination extends the distribution of the genus Cranfillia to Madagascar and East Africa. Additionally, we propose that partially adnate basal pairs of pinnae and deflexed first pair of pinnae could represent new diagnostic characters to distinguish Cranfillia from Austroblechnum. Finally, we provide a taxonomic treatment of Cranfillia bakeri with all recognized synonyms, and conduct detailed lectotypification for Blechnum bakeri C.Chr.

© Publications scientifiques du Muséum national d'Histoire naturelle, Paris.
Lucie Bauret, Rubén Vázquez, Sonia Molino, Myriam Gaudeul, France Rakotondrainibe, André Luís de Gasper, and Germinal Rouhan "New molecular and morphological evidences favor a combination of Blechnum bakeri C.Chr. in Cranfillia Gasper & V.A.O.Dittrich (Blechnaceae, Polypodiopsida), thus extending the distribution of Cranfillia to Madagascar and East Africa," Adansonia 42(18), 279-289, (30 November 2020). https://doi.org/10.5252/adansonia2020v42a18
Received: 15 January 2020; Accepted: 21 June 2020; Published: 30 November 2020
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KEYWORDS
Africa
Austroblechnum
Cranfillia
ferns
Lectotypification
Madagascar
new combination
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