Tricostularia paludosa

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Tricostularia paludosa

Placement status: name or taxon excluded (unspecific)

Taxonomy

CLARKE'S record for New Guinea of this Australian species was based on a collection by GIULIANETTI from Papua; this appeared to belong to Schoenus curvulus.
In passing I remark that the systematic place of T. paludosa has also been much disputed. CLARKE placed it in Costularia, but it does not fit the modern circumscription of this genus. Its original assignment to Schoenus (resp. Chaetospora) was maintained by KÜKENTHAL, who placed it in sect. Helothrix of this genus, but in doing so he made the section very heterogeneous, as T. paludosa widely differs by the reverse distribution of sexes in the spikelet (in Schoenus it is the upper flower which is reduced), and by the short straight rachilla neither elongated nor flexuous between the flowers. KÜKENTHAL'S argument against placing in Tricostularia (in which genus according to him the glumes should be spirally arranged) is ineffective, as both in Schoenus and Tricostularia the glumes are distichous.

Citation

Clarke 1908 – In: Kew Bull.: 47