Rehderodendron truongsonense (Styracaceae), a new species from Vietnam
Wan-Yi Zhao,Peter W. Fritsch,Van Truong Do,Qiang Fan,Qiang-Yi Yin,Darin S. Penneys,Ulf Swenson,Wenbo Liao +7 more
TL;DR: Rehderodendron truongsonense, a new species from Vietnam, is described and illustrated in this paper, which is endemic to the Truong Son mountain range.
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Abstract: Rehderodendron truongsonense, a new species from Vietnam, is described and illustrated. In the treatment of the Styracaceae for the Flore du Cambodge, du Laos, et du Vietnam, specimens of this species were recognized as R. macrocarpum Hu. These specimens clearly differ from R. macrocarpum, however, as well as from all other species of Rehderodendron (where these characters are known) by, e.g., an evergreen versus deciduous habit, fewer secondary veins of the leaf blade, shorter inflorescences and corolla lobes, large and conspicuous lowermost bracteoles, the presence of eight ovules per carpel, and a fruit with ca. 10 to 20 ribs that are indistinct. Phylogenetic analysis based on five chloroplast DNA regions (clpP-psbB, ndhD-psaC-ndhE-ndhG, rpl22-rps19, rps18-rpl20, and psbI-trnS-GCU) placed the new species as nested within Rehderodendron and sister to R. gongshanense. This new species is endemic to the Truong Son Mountain Range, from which the epithet is derived, and we assign it an IUCN Red List preliminary status as Near Threatened.
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Citations
Phylogeny of the Styracaceae Revisited Based on Whole Plastome Sequences, Including Novel Plastome Data from Parastyrax
TL;DR: The phylogenetic relationships among 11 out of the 12 genera of the angiosperm family Styracaceae have been largely resolved with DNA sequence data based on all protein-coding genes of the plastome.
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Unravelling the palaeobiogeographical history of the living fossil genus Rehderodendron (Styracaceae) with fossil and extant pollen and fruit data
TL;DR: In this paper , new data of pollen and fruit morphologiesy of six extant species of Rehderodendron (Styracaceae) and additional new data from fossil pollen and previously described fossil fruits were compared to infer which extant species are most closely related to the fossils.
Unravelling the palaeo-biogeographical history of the living fossil genus Rehderodendron (Styracaceae) – an Asian relic element of the Eurasian Cenozoic flora
17 Aug 2022
TL;DR: In this paper , the authors compared the morphology of six extant species and fossils of Rehderodendron and found that the fossil pollen and fruits resemble a morphological mixture of four extant species R. kwantungense, R. macrocarpum and R. indochinense, thus implying that these four extant and the fossil European taxa represent an old Eurasian lineage.
New combinations and synonyms in Rehderodendron (Styracaceae).
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