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中文
Table of Content
15 September 1994, Volume 14 Issue 3
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STUDY MATERIAL ON FLACOURTIACEAE OF CHINA
Lai Shu-shen
1994, 14(3): 221-230.
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This paper introduce the of Flacourtiaccac the of china and 2 new species, 7 new varie-Ties, 2 new forms, 2 new combination, 2 mew sections, 2 new distributions, 2 new subtribes.
TWO NEW SPECIES OF GERANIUM FROM SICHUAN
Tan Zhong-ming
1994, 14(3): 231-235.
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ANEW VARIETETY OF VIOLA COLLINA BESS. OF CHINA
Sun Kun
1994, 14(3): 236-236.
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STUDY ON THE CHINESE WILD WOODY PEONIES (Ⅱ) NEW TAXA OF PAEONIA L.SECT.MOUTAN DC.
Hong Tao, Gian Lupo Osti
1994, 14(3): 237-240.
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The present paper proposes 1 new subspecies and 1 new status or Chinese wild tree peony.Lin's Peony, the new subspecies differs from Paeonia roekii in its lanceolate or narrow ovate and unlobed leanets.Jishan Peony is a very good wild species, from which originating a series of cultivars.So. the author raised Haw's subspecies to species grade, Paeonia spontanea(Rehder) T.Hong et W. F. zhao stat. nov.
A NEW SPECIES AND A NEW VARIETY OF LILIACEAE FROM ZHEJIANG
Xue Xiang-Ji, Yao Hong
1994, 14(3): 241-242.
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A NEW SPECIES OF IMPATIENS (BALSAMINACEAE) FROM HENAN
Zhu Chang-shan, Yang Hao-wei
1994, 14(3): 243-245.
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A NEW VARIETY OF STAPHYLEACEAE FROM ANHUI PROVINCE,CHINA
Li Nong, He Yun-he
1994, 14(3): 246-246.
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FRULLANIA USAMIENSIS STEPH——A SPECIES OF FRULLANAIACEAE NEW TO CHINA
Fu Xing, Fang Jia-sheng
1994, 14(3): 247-250.
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Frullania usamiensis Steph. from Liaoning Province is reported as a species of Frullaniaccae new to China.
MYXOMYCETES FROM HEILONGJIANG——Ⅰ.SPECIES AND DISTRIBUTION OF MYXOMYCEFES IN LIANGSHUI NATURAL REGION
Wang Qi, Li Yu, Li Chuang-rong
1994, 14(3): 251-254.
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THE EMBRYOLOGY AND IT'S SYSTEMATIC SIGNIFICANCE OF NITRARIA
Li Shi-weng, Tu Li-zhu
1994, 14(3): 255-262.
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On the basis of the detailed studiy on the embryology in Nitraria sibirica Pall., the authors compared the characters of this genus with Those of the other genera in Zygophyllaceae, i.c.Fagonia, Scetzenia. Zygophyllum, Peganum, Balanites, and ered a distinct difference on the author wall development. microspere tetrads, gynoecium, ovule number in each locule, nucellus development, the presence or absence of the intemont tapetum formation of micropyle, endothelium, number of archespore and megaspore mother cell, suspensor developmnet, polyembryony, fruit dcvclopmnet, etc. The conclusion supports that the Nirtfaria should be separated from Zygophyllaccac, and set up a family Nitrariaceac.
SEM STUDIES AND THE TAXONOMICAL SIGNIFICANCE ON THE PETALS OF MEDICINAL PLANTS OF SWERTIA AND HALENIA
Li Ming, Gao Guang-yue, Feng Yu-xiu
1994, 14(3): 263-266.
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This paper reports the SEM(Scanning Electron Microscope) studies on the petals of medicinal species of Swertia and Halcma in China, viz., Swertia bimaculata Hook. f. et. Thoms, ex C. B. Clarke; S. angustifolia Buck-Ham. ex D. Don; S. tenuis T. N. Ho et S. W. Liu; S. macrosperma (C. B. Clarke) C. B. Clarke; S. punicea var. lutesccns Franch. T. N. Ho; S. cincta Burk and Halenia corniculata (L.) Cornaz.It is found that the surface features including the primary and secondary ornamentations, e. g. the reticulate, lophate and excrescence ones and the curvatura of the outmost periclinal epidermis cell walls etc., differ from one another with some taxonomic significance at genus, species and variety level. The results may provide new proof and suggestion to the original classification. The characters of the species are described in detail with SEM photographs and a diagnostic key is also presented briefly.
CYTOTAXONOMICAL STUDIES ON BUPLEURUM L. IN NORTHEAST CHINA Ⅰ. KARYOLOGY ANALYSIS OF SIX TAXA AND THEIR SIGNIFICANCE OF TAXONOMY
Jiang Chuan-ming, Xu Na, Wang Hao-you, Li Rui-jun, Liu Ming-yuan
1994, 14(3): 267-272.
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This paper reported karyotypes of six taxa of
Bupleurum
L. and discovered that new taxon in Wulimu, Zhao dong county had the same karyotype as B. falcatum in Japan, which was called temporarily to Wulimu population. Karyotype formulas of those taxa are showed as follows:
B. komarovianum
Lincz. 2n=8=2m+6sm(2SAT).
B. scorzonerifolium
Willd. 2n=12=20m+12.
B. chinense
DC. 2n=24=14m+10sm(2SAT).
B. bicaule
Helm 2n=32==10m(2SAT)+2sm.
B. longiradiatum
Turcz. 2n=12=10m(2SAT)+2sm. Wulimu population 2n=26=16m+10sm (2SAT). It was discussed that evolutionary relationchips among those taxa of
Bupleurum
L. in Northeast China based on karyotypic characters.
POLLON MORPHOLOGY AND ITS TAXONOMIC SIGNIFICANCE OF CALYSTEGIA R. BR. IN CHINA
Wen Xue-sen, Xie Dong-dou, Li Ai-guo, Chen Han-bin
1994, 14(3): 273-279.
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The pollen grains of five species and one variety of
Calystegia
from China were systemahcally examined under LM and SEM. The results arc as follows:Pollen grains are spheroidal, diam. about 53-108
μ
, pantoporate, with about 20-34pores. pores are circular, elliptical or irregular in shape, everyfive or four a group, arranged in a pantagon or a quadrilateral. Pore membrane is sunken or projecting, with about 5-20granules. The inteporal distance is about 7.8-18.2
μ
.Exine is 4-8
μ
thick, punctitectate, nexine is about 0.5
μ
thick, and sexine differs in thickness and tends to be thinner around pores. Minute supratectal processes, puncta and foveolae are present under SEM. Tectum is supported by bacula, Which are short, apically branched.The results indicate that
Calystegia
is a natural taxon. It perhaps originates from some pantocolpatc taxa of
Convolvulus
, or has a common ancester with them. Some channels between adjacent pores can be observed which may be an atavism or the pantoporatc pollen of
Calystegia
.In addition, there is a pollen specimen of
C. dahurica
(Beijing Botanic Gardens, 019) without tectum, and the branched bacula of the pollen grains are conspicuous. This type of pollen grains maybe results from an unknown mutation.
A STUDY ON BIOLOGICAL CHARACTERS OF REPRODUCTION OF LARIC OLGENSIS HENRY I. DIFFERENTIATION AND EARLY DEVELOPMENT OF CONE FLOWER BUDS
Li Guo-fan, Cao Fu-cun, Liu Gui-feng
1994, 14(3): 280-286.
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This paper studied the differentiation and the regularitics of distribution of megasporophyll and microsporophyll cones of Zhangbai larix (
Larix olgensis Henry
). Results were:(1) in the last ten days of June, the period of bud scale formation ended, the period of differentiation or microsporophyll began at the beginning of July and ended between the end of July and the early of August. In the first ten days of August, the ment entered into the period of microsporagia formation, sporogenous cells appeared in the last ten days of August and microsporocytes were formed in the middle ten days of September. At the end of October, microsporocytes remained in the stage of Leptotene and then went into winter dormancy. (2) At the beginning of September, bract primordia initiated to form, In the middle ten days of September, primordia of ovule scales formed, in the first ten days of October primary ovules appeared, in the last ten days of October, megasporocytcs were formed, and at the end of October megasporophyll cone buds went into winter dormancy. (3) Microsporophyll cone buds mainly distributed in the middle and lower regions of the crown and greatly exceed megesporophyll cone buds in number, at about 19 folds. Megasporophyll cone buds mainly concentrated in the middle region of the crown, while number of budsin the lower region were greater than that in the upper.
A COMPARATIVE STUDY ON PHOTOSYNTHESIS AND TRANSPIRATION DIURNAL VARIATION OF ANEUROLEPIDIUM CHINENSE AND PUCCINELLIA TENUIFLORA
Yan Xiu-feng, Sun Guo-rong, Li Jing-lan, Li Jing-xin
1994, 14(3): 287-291.
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This paper has compared the diurnal variation of photosynthesis and transpiration character of
Aneurolepidium chinense
with that of
Puccinellia tenuiflora
in Songnen alkalited grassland. The regularitics of their diurnal variation are similar. But the photosynthetic ability and water use efficiency of
P. tenuiflora
is better than
A. chinense
. That is one of the reasons why saline-alkali tolerance of
P. tenuiflora
is better than
A. chinense
.
STUDIES ON TYPICAL PRIMITIVE BROAD-LEAVED PINUS KORAIENSIS FOREST COMMUNITY IN WHICH WILD GINSENG DISTRIBUTES NATURALLY AND ITS CHARACTERISTICS
Liu Qi-jing, Wang He-xin, YangXiu-qing
1994, 14(3): 292-298.
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This paper comprehensively analyses the community characteristics of typical Tilia broad-leaved Pinus koraiensis forest in which wild ginseng distributes naturally by means of species diversity index, ecological dominance. the evenness of community and important valuses. The result shows that there are many species and its individuals in Tilia broad-leaved Pinus koraiensis forest, the species diversity index and the evenness of community are also very high, species are well-distribute and have evident layers, ecological dominance is so low that the forest has steady community structure.This kind of community characteristics that provide suitable ecological environment for ginseng's growth are also main reason for ginseng-the plant left over from ancient bines to live and be preserved for a long time in the community.
A PRELIMINARY CLADISTIC STUDY ON THE MULTISTAMINAL WILLOWS (SALIX) IN CHINA
Zhang Ming-li
1994, 14(3): 299-305.
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The genera
Populus
and
Chosenia
were used as different outgroups, respectively, to construct two cladograms for multistaminal willows in China. The results showed that
Chosenia
,
S. maximowiczii
and
Sect
.
Tetraspermae
were primitive taxa. It was supported to erect the genus
Toisusu
Kimura. According to the cladograms and the chromosome mumbers, multistaminal willows could be divided into five cladistic groups. It was in agreement with Prof. Fang's view that multistaminal willows had a division of the "southern type" and the "northern type" and had an evolutionary trend from south to north in Eastasia especially for Sect.
Wilsonianae
endemic to China. The differentiation of Sect.
Salix
and
Sect
.
Subalbae
was accepted.
COMPARATIVE STUDIES ON SECONDARY PHLOEM OF 7 SPECIES IN SALICACEAE
Liu Dong-hua, Gao Xin-zeng, Chen Yao-tang
1994, 14(3): 306-312.
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The comparative studies of the structure of secondary phloem in 7 species of 2 genera of Salicaceae is studied.The results showed:(1)
Populus
and
Salix
. in their anatomical structures of secondary phloem, exhibit some similar features:distinct stratification in the secondary phloem;phloem fibres and crystal-containing cells in tangential bands alternating with bands of sieve clements, companion cells and phloem parenchyma cells; and sieve elements with compound sieve plates and oblique end walls bearing 7 to 8 sieve areas.(2) There are obvious differences between them in type or ray cells and crystals. Sclereids were not found in secondary phloem in Salix. and they existed in non-conducting phloem of
Populus
. (3) Some phloem anatomical features of the two genera are more primitive in evolution.
PICEA-ABIES FORESTS OF THE NORTHEAST CHINA
Yang Guo-ting, Erich Hübl, Sun Bing, Zhang Jie
1994, 14(3): 313-328.
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he following issues related to the Picea-Abies forests of the range have been studied in this paper:1) Environmemtal settings; 2) Ecological attributes of the major tree species of the sprucde-fir forests; 3) Species composition and structure of each vegetation type of the forests dominated by Picea koraicnsis, P. jezoensis and Abies nephrolepis; 4) Disturbance factors influencing the forests; 5) General successional patterns and processes of the spruce-fir forests of the northeast China.
