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| Hapaline kimthoae K.Z.Hein, Vuong & V.C.Nguyen, in Nguyen, Truong, Le, Dang & Hein, 2022. Photos by Van Canh Nguyen & Ba Vuong Truong. |
Abstract
Hapaline kimthoae K.Z.Hein, Vuong & V.C.Nguyen from Da Nang province, Vietnam, is described and illustrated as a species new to science. Description, colour plates, discussion of similar taxa, phenology, distribution and a preliminary conservation status assessment are provided. With this discovery, Vietnam now holds a total of five Hapaline species. An identification key to these species is provided.
Keyword: Aroideae, Caladieae, granite, Hapaline locii, H. kimthoae, plant taxonomy, South Central Coast
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| Holotype of Hapaline kimthoae sp. nov. Photo by: Ba Vuong Truong. |
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| Hapaline kimthoae sp. nov. A. Excavated plant, B. Leaf (left showing adaxial surface; right showing abaxial surface), C. Inflorescence, D. Front Side view of inflorescence, E. Front view of inflorescence, F. Apex of spathe limb, G. Female portion of spadix showing ovaries, lower spathe removed, H. Back view of inflorescence, I. Ovaries. Photos by: Ba Vuong Truong. |
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| Habit of Hapaline kimthoae sp. nov. Photo by: Van Canh Nguyen. |
Hapaline kimthoae K.Z.Hein, Vuong & V.C.Nguyen, sp. nov.
Diagnosis: This new species is morphologically similar to Hapaline locii V.D.Nguyen & Croat in having peduncle longer than petiole and spadix with sterile apex formed of fused synandrodes. But it differs significantly in having cuneate or obtuse leaf base (vs. rounded to cordate leaf base), pinkish white spathe with reddish brown tessellation (vs. dull light green or lime green spathe) and ovoid ovaries arranged in a single row (vs. bottle-shaped ovaries arranged in two alternating rows).
Distribution and habitat: The new species can be
found only from the type locality, Da Nang province of
Vietnam. The species occurs along stream bank under
lowland broadleaf evergreen forests in deep leaf litter
soils over granites, at an altitude of about 700 m and
associated with Aspdistra sp.
Eponymy: The species named after Ms. Pham Thi
Kim Thoa, Da Nang University of Science and
Technology, who kindly supported the budget for the
fieldworks.
Van Canh Nguyen, Ba Vuong Truong, Van Vuong Le, Van Son Dang and Khant Zaw Hein. 2022. A New Species of Hapaline (Araceae: Caladieae) from Da Nang Province, Vietnam. Taiwania. 67(2); 239-242. DOI: 10.6165/tai.2022.67.239