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Medientyp:
E-Artikel
Titel:
Aristolochia nuichuaensis (subg. Siphisia, Aristolochiaceae), a new species, an updated key and a checklist to the species of Siphisia in Vietnam
Beteiligte:
Van Truong Do;
Vu, Thi Thu Hien;
Luu, Hong Truong;
Nguyen, Thanh Trung
Erschienen:
Finnish Zoological and Botanical Publishing Board, 2019
Beschreibung:
<p>We describe and illustrate <italic>Aristolochia nuichuaensis</italic> (Aristolochiaceae) as a new species from southern Vietnam. It has a cordate leaf blade, an up to 16(20)-cm-long inflorescence axis, a strongly constricted, oblong cylindrically-shaped upper part of tube, with outer surface uniformly purple, inner surface uniformly white, a campanulate limb, 4.5–5.0 cm in diam., with non-revolute lobes, a whitish outer surface of limb with visible purple streaks, a white inner surface of limb with sunken dark-purple streaks and verrucoses, an elliptic and white throat, and a gynostemium with three acute lobes. Its phenology, ecology, and comparisons with some morphologically similar species are presented. The diagnostic characters place <italic>A. nuichuaensis</italic> in the subgenus <italic>Siphisia</italic>. We also provide an identification key and a checklist with information on the distributions of the known <italic>Siphisia</italic> species in Vietnam.</p>