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Published: 2017-07-25

Sciaphila sugimotoi (Triuridaceae), a new mycoheterotrophic plant from Ishigaki Island, Japan

Department of Biology, Graduate school of Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501, Japan
Faculty of Agriculture, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
Distribution mycoheterotrophic plants new species Sciaphila taxonomy Triuridaceae Ryukyu Monocots


A new species of Sciaphila (Triuridaceae), S. sugimotoi Suetsugu & T. Nishioka, is described and illustrated from Ishigaki Island, Okinawa Prefecture, Japan. The new species is similar to S. arfakiana in having a stipitate globose to ellipsoid knob without hairs in apices of all male perianth segments. However, it is clearly distinguishable by its shorter pedicel, filament-connective not extended and thick stem. A key to the Japanese Sciaphila based on the whole flower characteristics and stylar characteristics, are provided for easy identification of these rare mycoheterotrophic plants.