Taxonomy of <i>Hirsutiarum</i> (<i>Araceae</i>), a New Genus Record for the Flora of Myanmar

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  • ミャンマー新産の<i>Hirsutiarum</i>（サトイモ科）の分類
  • Taxonomy of Hirsutiarum (Araceae), a New Genus Record for the Flora of Myanmar

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<p>Hirsutiarum hirsutum (S. Y. Hu) J. Murata & Ohi-Toma (Araceae) is reported from the Karen Hills in eastern Myanmar as a new record of the genus and species for Myanmar. This species is characteristic in having a completely pedate leaf whose lateral leaflets are folded downwards in parallel (Arisaema type aestivation) and shoot organization of stem type A reported by Sriboonma et al. (1994). In the species of Sauromatum s.l. recognized by Cusimano et al. (2010), the completely pedate leaf and stem type A are also shared in four species, Sauromatum brevipilosum (Hett. & Sizemore) Cusimano & Hett., S. tentaculatum (Hett.) Cusimano & Hett., S. meghalayense D. K. Roy, Talukdar, B. K. Sinha & Dutta Choud. and S. nangkarense A. Nangkar & H. Tag. In considering these morphological distinction and molecular phylogeny by Cusimano et al. (2010) and Ohi-Toma et al. (2010), Hirsutiarum is recircumscribed with the following five species and necessary new combinations are made: Hirsutiarum brevipilosum (Hett. & Sizemore) J. Murata & Ohi-Toma, H. hirsutum (S. Y. Hu) J. Murata & Ohi-Toma, H. meghalayense (D. K. Roy, Talukdar, B. K. Sinha & Dutta Choud.) J. Murata & Ohi-Toma, comb. nov., H. nangkarense (A. Nangkar & H. Tag) J. Murata & Ohi-Toma, comb. nov. and H. tentaculatum (Hett.) J. Murata & Ohi-Toma, comb. nov.</p>

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