Pseudopyxis heterophylla subsp. monilirhizoma (Rubiaceae, tribe Paederieae), a new combination from Zhejiang of China, based on morphological trait analysis

Pseudopyxis Miq., a genus distributed in eastern China and Japan, comprises three species, in which Pseudopyxis monilirhizoma Tao Chen is endemic to China. The variation analysis of the diagnostic characters among these three species of Pseudopyxis was carried out. Based on principal coordinate anal...

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Main Authors: YE Lixin, ZHOU Yingying, LIU Lingjuan, CHEN Weijie, LIU Shenglong, ZHENG Chaozong, JIN Xiaofeng
Format: Article
Language:English
Published: Zhejiang University Press 2013-07-01
Series:浙江大学学报. 农业与生命科学版
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Online Access:https://www.academax.com/doi/10.3785/j.issn.1008-9209.2012.08.271
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author YE Lixin
ZHOU Yingying
LIU Lingjuan
CHEN Weijie
LIU Shenglong
ZHENG Chaozong
JIN Xiaofeng
author_facet YE Lixin
ZHOU Yingying
LIU Lingjuan
CHEN Weijie
LIU Shenglong
ZHENG Chaozong
JIN Xiaofeng
author_sort YE Lixin
collection DOAJ
description Pseudopyxis Miq., a genus distributed in eastern China and Japan, comprises three species, in which Pseudopyxis monilirhizoma Tao Chen is endemic to China. The variation analysis of the diagnostic characters among these three species of Pseudopyxis was carried out. Based on principal coordinate analysis (PCoA) of eighteen morphological characters, the individuals of P. depressa were separated distinctly from P. heterophylla+P. monilirhizoma, whereas the separation between P. heterophylla and P. monilirhizoma was not clear. The observations of stem indumentum and seed micromorphology showed the difference between P. depressa and P. heterophylla + P. monilirhizoma, while that of P. heterophylla and P. monilirhizoma was consistent. In case of the observations of stem indumentum and seed micromorphology and PCoA of morphological characters, P. monilirhizoma is consequently combined as a subspecies of P. heterophylla (Miq.) Maxim., and the combination of P. heterophylla subsp. monilirhizoma (Tao Chen) L. X. Ye, C. Z. Zheng & X. F. Jin is proposed.
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series 浙江大学学报. 农业与生命科学版
spelling doaj-art-eafdf403450f405aa1c909c0128acb782025-08-20T02:47:38ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552013-07-013937538010.3785/j.issn.1008-9209.2012.08.27110089209Pseudopyxis heterophylla subsp. monilirhizoma (Rubiaceae, tribe Paederieae), a new combination from Zhejiang of China, based on morphological trait analysisYE LixinZHOU YingyingLIU LingjuanCHEN WeijieLIU ShenglongZHENG ChaozongJIN XiaofengPseudopyxis Miq., a genus distributed in eastern China and Japan, comprises three species, in which Pseudopyxis monilirhizoma Tao Chen is endemic to China. The variation analysis of the diagnostic characters among these three species of Pseudopyxis was carried out. Based on principal coordinate analysis (PCoA) of eighteen morphological characters, the individuals of P. depressa were separated distinctly from P. heterophylla+P. monilirhizoma, whereas the separation between P. heterophylla and P. monilirhizoma was not clear. The observations of stem indumentum and seed micromorphology showed the difference between P. depressa and P. heterophylla + P. monilirhizoma, while that of P. heterophylla and P. monilirhizoma was consistent. In case of the observations of stem indumentum and seed micromorphology and PCoA of morphological characters, P. monilirhizoma is consequently combined as a subspecies of P. heterophylla (Miq.) Maxim., and the combination of P. heterophylla subsp. monilirhizoma (Tao Chen) L. X. Ye, C. Z. Zheng &amp; X. F. Jin is proposed.https://www.academax.com/doi/10.3785/j.issn.1008-9209.2012.08.271<italic>Pseudopyxis heterophylla</italic> subsp. <italic>monilirhizoma</italic>new combinationmorphological charactersscanning electron microscope (SEM)taxonomy
spellingShingle YE Lixin
ZHOU Yingying
LIU Lingjuan
CHEN Weijie
LIU Shenglong
ZHENG Chaozong
JIN Xiaofeng
Pseudopyxis heterophylla subsp. monilirhizoma (Rubiaceae, tribe Paederieae), a new combination from Zhejiang of China, based on morphological trait analysis
浙江大学学报. 农业与生命科学版
<italic>Pseudopyxis heterophylla</italic> subsp. <italic>monilirhizoma</italic>
new combination
morphological characters
scanning electron microscope (SEM)
taxonomy
title Pseudopyxis heterophylla subsp. monilirhizoma (Rubiaceae, tribe Paederieae), a new combination from Zhejiang of China, based on morphological trait analysis
title_full Pseudopyxis heterophylla subsp. monilirhizoma (Rubiaceae, tribe Paederieae), a new combination from Zhejiang of China, based on morphological trait analysis
title_fullStr Pseudopyxis heterophylla subsp. monilirhizoma (Rubiaceae, tribe Paederieae), a new combination from Zhejiang of China, based on morphological trait analysis
title_full_unstemmed Pseudopyxis heterophylla subsp. monilirhizoma (Rubiaceae, tribe Paederieae), a new combination from Zhejiang of China, based on morphological trait analysis
title_short Pseudopyxis heterophylla subsp. monilirhizoma (Rubiaceae, tribe Paederieae), a new combination from Zhejiang of China, based on morphological trait analysis
title_sort pseudopyxis heterophylla subsp monilirhizoma rubiaceae tribe paederieae a new combination from zhejiang of china based on morphological trait analysis
topic <italic>Pseudopyxis heterophylla</italic> subsp. <italic>monilirhizoma</italic>
new combination
morphological characters
scanning electron microscope (SEM)
taxonomy
url https://www.academax.com/doi/10.3785/j.issn.1008-9209.2012.08.271
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