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| Sciaphila sugimotoi Suetsugu & T. Nishioka |
Abstract
A new species of Sciaphila (Triuridaceae), Sciaphila 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.
Keywords: Distribution, mycoheterotrophic plants, new species, Sciaphila, taxonomy, Triuridaceae, Ryukyu, Monocots
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| Figure 1: Habit (A) and microscopic images (B, C, D) of Sciaphila sugimotoi. A. Flowering plant. B–C. Male flower. D. Female flower.
Photographed by Takaomi Sugimoto in the type locality.
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Sciaphila sugimotoi Suetsugu & T. Nishioka, sp. nov.
Type:— JAPAN. Ryukyu. Okinawa Pref., Ishigaki City, Hirae, alt ca. 180m, 18 October 2016, T. Sugimoto s.n. (holotype KYO!; isotype OSA!).
Diagnosis:— Sciaphila sugimotoi is similar to Sciaphila arfakiana Beccari (1890: 337), but it differs by its shorter pedicel, its filamentconnective not extended and its thick stem.
Etymology:— The new species is named after Mr. Takaomi Sugimoto, who collected ample specimens of this
new species for the comparative study.
Phytotaxa. 314(2); 279–284. DOI: 10.11646/phytotaxa.314.2.10
New non-photosynthesizing plant species discovered on Ishigaki island, J...
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