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| Aristolochia luudamcui T.V.Do, in Phan, Wanke, Neinhuis et Do, 2021. |
Abstract
Aristolochia luudamcui (Aristolochia subgen. Siphisia, Aristolochiaceae), a new species from Vietnam, previously misidentified as A. utriformis, is described and illustrated here. The new species is most similar to A. pseudoutriformis and A. utriformis concerning the morphology of the leaf lamina, the color of the perianth, and the shape of the limb, but A. luudamcui can be distinguished from the other two species by having a deeply 3-lobed limb and a glabrous, yellow inner surface of limb lobes. A detailed description, information on ecology, phenology, distribution, usage, a provisional assessment of the conservation status of the new species, and a comparison with morphologically similar species are provided as well.
Keywords: Aristolochiaceae, Aristolochia utriformis, misidentified, Piperales, Siphisia, Magnoliids
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| Aristolochia luudamcui T.V.Do sp. nov. A. Habit; B. Adaxial leaf surface; C. Abaxial leaf surface; D. Branch bearing a terminal flower; E. Lateral view of the flower (red arrow showing a subulate bracteole); F. Lateral view of the perianth; G. Lateral view of the longitudinally dissected perianth; H. Lateral view of the longitudinally dissected limb; I. Close up of the throat (showed by a blue arrow); J. Gynostemium. All photographed by Truong Van Do. |
Aristolochia luudamcui T.V.Do, sp. nov.
Aristolochia luudamcui is most similar to A. pseudoutriformis and A. utriformis by sharing an ovate to lanceolate-ovate leaf blade, alight yellow perianth, and a saccate-shaped limb, but it clearly differs from these two species by having a deeply 3-lobed limb (vs.shallowly 3-lobed limb in both A. pseudoutriformis and A. utriformis) and a yellow, glabrous inner surface of limb lobes (vs. dark-red, dense processes in A. pseudoutriformis and black-purple, sparse processes in A. utriformis).
Etymology:—The specific epithet honors Prof. Dr. Luu Dam Cu, a former vice-director of Vietnam NationalMuseum of Nature who strongly supported botanical research at the museum during the past years.
Vernacular name:—Mộc hương Cư
Long Ke PHAN, Stefan WANKE, Christoph NEINHUIS and Truong Van DO. 2021. Aristolochia luudamcui (Aristolochiaceae), A New Species from northern Vietnam. Phytotaxa. 527(1); 67-74. DOI: doi.org/10.11646/phytotaxa.527.1.7 [2021-11-26]
