Willdenowia 34
Willdenowia – Annals of the Botanic Garden and
Botanical Museum Berlin-Dahlem
ISSN 0511-9618
© 2004 BGBM Berlin-Dahlem.
Oberprieler, C. 2004: On the taxonomic status
and the phylogenetic relationships of some unispecific Mediterranean
genera of Compositae-Anthemideae II. Daveaua, Leucocyclus
and Nananthea.
Willdenowia 34: 341-350.
doi:10.3372/wi.34.34201
Abstract
Sequences of the nrDNA internal transcribed spacer (ITS) region
were analysed for 113 representative species of 59 genera of Compositae-Anthemideae
to ascertain the systematic position of the three unispecific
Mediterranean genera Daveaua, Leucocyclus and Nananthea.
Daveaua anthemoides is found to be a member of a well
supported clade of genera around the closely-knit Leucanthemum
group, being a candidate (together with Heteromera and Otospermum)
for a sister-group of this assemblage. For Leucocyclus formosus,
which was considered to be closely related to Anacyclus due
to its dorsiventrally flattened achenes, a position close to or even
among representatives of Achillea is demonstrated,
corroborating alleged relationships suggested by the flavonoid
complements of these genera. Nananthea perpusilla, hitherto
considered to be close to Anthemis due to its tetrasporic
embryo sac development, is found to be more closely related to Tripleurospermum,
which also shares the tetrasporic embryo sac and the indumentum of
basifixed hairs.
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