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| Alocasia sakonakhonensis Chatan & Promprom, in Promprom, Munglue et Chatan. 2024. DOI: 10.1002/ece3.11462 |
Abstract
Alocasia sakonakhonensis Chatan & Promprom (Araceae), a new species from northeastern Thailand, is described and illustrated. It is clearly different from other previously known species by leaves, spathe, ovary, sterile interstice, synandria, and appendix. Color illustrations, and a distribution map are provided, as well as comparative morphological characters about its similar species. The preliminary conservation status assessment of the new species was presented.
Keywords: aroid, Aroideae, biodiversity, flowering plant, Monocots, new taxa
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| Alocasia sakonakhonensis Chatan & Promprom (a). habit; (b). whole plant; (c). rhizome and leaf sheath; (d). leaf blade. All are photographed by Wilawan Promprom. |
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| Alocasia sakonakhonensis Chatan & Promprom (a). inflorescence before the spathe limb bending downward; (b). inflorescence during the spathe limb bending downward; (c). spadix; (d). synandria (top view); (e). synandria (lateral view); (f). pistillate flower. All are photographed by Wilawan Promprom. |
Alocasia sakonakhonensis Chatan & Promprom, sp. nov.
Diagnosis: Alocasia sakonakhonensis Chatan & Promprom is most similar to Alocasia acuminata Schott (Boyce, 2008; Boyce & Sookchaloem, 2012), but the former is readily distinguishable by the presence of moderately green with numerous dirty mottled dark brown 1–3 mm lines or areas (vs bright green without these dirty mottled dark brown 1–3 mm lines or areas); longer peduncle, spathe, spathe limb, spadix, sterile interstice, and appendix; mostly distinctly 2–4 lobed or rarely unlobed stigma (vs unlobed or very slightly lobed stigma; opened petiolar sheath (vs closed in A. acuminata); dull yellow-brown appendix (vs white one found in A. acuminata).
Etymology: The specific epithet of Alocasia sakonakhonensis refers to the type locality, the Sakon Nakhon province in the northeast of Thailand.
Wilawan Promprom, Phukphon Munglue and Wannachai Chatan. 2024. Alocasia sakonakhonensis (Araceae), A New Species from northeastern Thailand. Ecology and Evolution. 14(5); e11462. DOI: doi.org/10.1002/ece3.11462 Researchgate.net/publication/380824363_Alocasia_sakonakhonensis_a_new_species_from_NE_Thailand
