| Title: |
REHDERODENDRON TRUONGSONENSE (STYRACACEAE), A NEW SPECIES FROM VIETNAM. |
| Authors: |
Wan-Yi Zhao, Fritsch, Peter W., Van Truong Do, Qiang Fan, Qian-Yi Yin, Penneys, Darin S., Swenson, Ulf, Wen-Bo Liao |
| Source: |
Journal of the Botanical Research Institute of Texas; 2019, Vol. 13 Issue 1, p157-171, 15p |
| Subject Terms: |
CHLOROPLAST DNA, MOUNTAINS, SPECIES, CARPEL, MOLECULAR phylogeny, OVULES |
| Geographic Terms: |
VIETNAM, LAOS |
| Company/Entity: |
INTERNATIONAL Union for Conservation of Nature & Natural Resources |
| Abstract (English): |
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 Viêtnam, 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. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
本文报道了越南安息香科木瓜红属一新种--长山木瓜红 Rehderodendron truongsonense。在《柬埔寨、老挝、越南植物志》 中，本种被 错误的处理为木瓜红 R. macrocarpum。然而，长山木瓜红与木瓜红以及本属的其它种均明显不同；本种为常绿（其它种落叶），叶片侧脉 较少，花序和花冠裂片较短，最下部的小苞片大而明显，每室有8个胚珠，果具10-20棱；因而区别明显。基于5个叶绿体基因片段 (clpP-psbB, ndhD-psaC-ndhE-ndhG, rpl22-rps19, rps18-rpl20, psbI-trnS-GCU) 的系统发育研究显示，长山木瓜红嵌套进木瓜红属，并为贡 山木瓜红R. gongshanense的姐妹类群。本种为越南长山山脉的特有种，也即本种种加词的来源。根据IUCN物种红色名录的评价指标，本 种初步评价为近危物种。. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
