The Anomalous Structure of Stems of Seven Rubiaceae Lianas

in Foreign journals(other), 國外期刊(其他)
標題The Anomalous Structure of Stems of Seven Rubiaceae Lianas
出版類型國外期刊(其他)
出版年度2014
AuthorsSheng-Zehn Yang, 楊勝任
期刊 植物?研究,
開始頁47
頁數15
出版日期2014 / 1
其他編號0000
中文摘要

Rubiaceae are one of the dominant families in the broad leaved forest of Taiwan in low altitude,
including some lianas. There was a paucity of the cambium variations of lianas in this family that
affects the lianas identification correctly. The aims of this study are to identify the cambium variation
of Rubiaceae seven liana stems, line drawings, photo the cross-section of stem structures, and
make an indented key in order to aid the field survey. Four xylem types are found, including
deeply lobe types such as Hedyotis hedyotidea, Morinda parvifolia and Morinda umbellate; twolobed
type as Paederia foetida; circular type as Mussaenda pubescens, Psychotria serpens, and Uncaria
lanosa var. appendiculata belonging to angular type. Except Paederia foetida, six species develop
including phloem. The specific character of Uncaria lanosa var. appendiculata about included
phloem is square shape. Psychotria serpens develop adventitious root, and Morinda parvifolia
and Morinda umbellata were together with thick phellem. Four species with flame secondary
phloem are Hedyotis hedyotidea, Paederia foetida, Mussaenda pubescens, and Psychotria serpens.
Secondary xylem and secondary phloem developing mosaic pattern are Hedyotis hedyotidea, Morinda
parvifolia and Morinda umbellata. Only one species with flame secondary phloem and mosaic
pattern is Hedyotis hedyotidea in which its pith is eccentric.

期刊名稱Botanical Research
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