Dataset Information

Dichocarpum hagiangense-a new species and an updated checklist of Ranunculaceae in Vietnam.

ABSTRACT: Dichocarpum hagiangense from Ha Giang province, northern Vietnam is described and illustrated. Diagnostic features of the new species are a short rhizomatous stem, (2-)3-foliolate or simple leaves, and pink-purple flowers. The described species is distinct from closely allied D. trifoliolatum in having longer sepals, shape and obcordate apex of petal limbs, shorter flower stem, number and tooth shape of basal leaves; it differs from D. basilare and D. carinatum in having stem leaf, retuse apex and longer of central leaflet, number and (2-)3-foliated (or simple) of leaf. With the support of molecular data, the new species was clearly distinguished from other species in the Dichocarpum group by eight autapomorphic characters in nrITS sequence. A key to all species of Dichocarpum is provided. We suggest the IUCN conservation status of D. hagiangense to be "Critically Endangered". A newest checklist of the family Ranunculaceae in Vietnam is updated.

SUBMITTER: Nguyen MT

PROVIDER: S-EPMC7518158 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Dichocarpum hagiangense-a new species and an updated checklist of Ranunculaceae in Vietnam.

Nguyen Minh Ty MT Trinh Ngoc Bon NB Tran Thanh Thi Viet TTV Thanh Tran Duc TD Phan Long Ke LK Pham Van The VT

PeerJ 20200922

Dichocarpum hagiangense from Ha Giang province, northern Vietnam is described and illustrated. Diagnostic features of the new species are a short rhizomatous stem, (2-)3-foliolate or simple leaves, and pink-purple flowers. The described species is distinct from closely allied D. trifoliolatum in having longer sepals, shape and obcordate apex of petal limbs, shorter flower stem, number and tooth shape of basal leaves; it differs from D. basilare and D. carinatum in hav ...[more]

PMID: 33024628

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Dataset Information

Dichocarpum hagiangense-a new species and an updated checklist of Ranunculaceae in Vietnam.

Publications

<i>Dichocarpum hagiangense</i>-a new species and an updated checklist of Ranunculaceae in Vietnam.

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