The families of the order Rhodymeniales (Rhodophyta): a molecular-systematic investigation with a description of Faucheaceae fam. nov.
- 1 January 1999
- journal article
- Published by Taylor & Francis in Phycologia
- Vol. 38 (1) , 23-40
- https://doi.org/10.2216/i0031-8884-38-1-23.1
Abstract
Small-subunit ribosomal DNA (SSU rDNA) sequences have been newly determined for 22 species of Rhodymeniales, bringing to 32 the total number included in our data set. Analyses of these sequences constitute a molecular-systematic survey of some 60% of the genera in the order, 60% of the treated genera represented by type species. As a result, several aspects of the currently accepted infraordinal groupings of taxa are challenged because the three component families (Champiaceae, Lomentariaceae, and Rhodymeniaceae) and several of their tribal subdivisions are not resolved as monophyletic. We therefore emend the defining characters of the families, producing a more restricted Rhodymeniaceae (with removal of Gelidiopsis and Kylin's Fauchea Group) and an expanded Champiaceae (by inclusion of the heretofore unplaced Dictyothamnion) and Lomentariaceae (by inclusion of the genus Gelidiopsis). A new family, Faucheaceae I.M.Strachan, G.W. Saunders et Kraft, is established for Kylin's Fauchea Group. Two new...Keywords
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