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A phylogeny and new classification for Mesembryanthemoideae (Aizoaceae)
Author(s) -
Klak Cornelia,
Bruyns Peter V.,
Hedderson Terry A.J.
Publication year - 2007
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.2307/25065857
Subject(s) - synapomorphy , subspecies , biology , monophyly , clade , botany , zoology , subfamily , phylogenetics , biochemistry , gene
We present a phylogeny for Mesembryanthemoideae (Aizoaceae) based on sampling of nearly all species and subspecies of the subfamily and analysis of cp trnL-F, rbcL-atpB, rp s 16 , nrITS1 and morphology. The larger genera Phyllobolus and Mesembryanthemum are not monophyletic. Although some clades can be circumscribed with morphological (often homoplasious) synapomorphies, several clades are impossible to characterise morphologically. We recognise a single genus, Mesembryanthemum , in Mesembryanthemoideae. The genera Aptenia, Aridaria, Aspazoma, Brownanthus, Caulipsolon, Dactylopsis, Phyllobolus, Prenia, Psilocaulon, Sceletium , and Synaptophyllum are reduced to synonymy. Mesembryanthemum , which now consists of 101 species without recognised sections, can be distinguished by several uniquely derived morphological characters. Mesembryanthemum longipapillosum , which had recently been reduced to synonymy, is reinstated.