We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
SYSTEMATICS OF THE CALCIFIED GENERA OF THE GALAXAURACEAE (NEMALIALES, RHODOPHYTA) WITH AN EMPHASIS ON TAIWAN SPECIES.
- Authors
Wei-Lung Wang; Shao-Lun Liu; Showe-Mei Lin
- Abstract
The current separation of the calcified generaActinotrichiaDecaisne,GalaxauraLamouroux, andTricleocarpaHuisman et Borowitzka in the Galaxauraceae is largely based on type of life history (whether the gametophytes and tetrasporophytes are isomorphic or heteromorphic with respect to gross morphology or cortical-cell features) and on features of postfertilization development (such as the composition of the pericarp). We reexamined the phylogenetic relationships of these genera based on comparativerbcL sequence analysis, types of life cycle, and cystocarp development. Four distinct assemblages have been identified: anActinotrichiaclade, aTricleocarpaclade, aGalaxauraclade (containing the type species), and aDichotomariaclade made of a number of formerlyGalaxauraspecies (D.obtusata[Ellis et Solander] Lamarck,D.marginata[Ellis et Solander] Lamarck, andD. diesingiana[Zanardini] Huisman, Harper and Saunders). Key differences betweenDichotomariaandGalaxaurainclude the habit of the gametophytic and tetrasporophytic generations (isomorphic inDichotomariaand dimorphic inGalaxaura) as well as the presence or absence of a persistent pericarp in the cystocarp (present inDichotomariaand absent inGalaxaura). Molecular data do not support monophyly for the putatively pantropical speciesGalaxaura rugosa,Dichotomaria obtusata, andD.marginata, all of which we conclude are in need of taxonomic revision.
- Subjects
NEMALIALES; RED algae; PHYLOGENY; GALAXAURA; CYSTOCARP; PLANT morphology
- Publication
Journal of Phycology, 2005, Vol 41, Issue 3, p685
- ISSN
0022-3646
- Publication type
Article
- DOI
10.1111/j.1529-8817.2005.00089.x