ORIGINAL ARTICLE
The freshwater red algae (Batrachospermales, Rhodophyta) of Africa and Madagascar
I. New species of Kumanoa, Sirodotia and the new genus Ahidranoa (Batrachospermaceae)
| 1 | Institute for Integrated Natural Sciences – Biology, University of
Koblenz-Landau, Universitätsstraße 1, 56070 Koblenz, Germany |
| 2 | Nees Institute for Biodiversity of Plants, University of Bonn, Meckenheimer
Allee 170, 53115 Bonn, Germany |
Publication date: 2020-06-02
Plant and Fungal Systematics 2020; 65(1): 147–166
KEYWORDS
ABSTRACT
Our knowledge of the diversity of African freshwater red algae is rather limited.
Only a few reports exist. During our field work in the last five years we frequently
encountered freshwater red algae in streams in Rwanda and Madagascar. Here we describe
four new species and one new genus of freshwater red algae from the Batrachospermales,
based on morphological and molecular evidence: Kumanoa comperei from the Democratic
Republic of the Congo and Rwanda is related to K. montagnei and K. nodiflora; Kumanoa
rwandensis from Rwanda is related to K. ambigua and K. gudjewga; Sirodotia masoalensis
is related to S. huillensis and S. delicatula; and the new genus and species Ahidranoa
madagascariensis from Madagascar is sister to Sirodotia, Lemanea, Batrachospermum s.str.
and Tuomeya. There is also evidence for the presence of Sheathia, which was recorded
as yet-unidentifiable Chantransia stages. These are among the first new descriptions since
1899 from the African continent and since 1964 from Madagascar. A short history of the
exploration of freshwater red algae from Africa and Madagascar is provided. All new taxa
are accompanied by illustrations and observations on their ecology.
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