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    15 March 1987, Volume 7 Issue 1
    A REVISION OF THE GENUS PARNASSIA (SAXIFRAGACEAE) IN CHINA
    Ku Tsue-chih
    1987, 7(1):  1-61. 
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    After investigating the external morphology of the genus Parnassia the author realizes that the morphological variance of the staminodes may reflect the main evolutionary course of the genus and utilizes them as the criterion for discriminating the primary infrageneric taxa. The taxa with terete simple or 2-lobed staminodes are considered Primitive, while those with the flattened, lobed or deeply divided ones advanced. The characters of anther and petal margine and number of the cauline leaves are used to discern subsections and series. According to the point of view just mentioned, the classification constructed by Handel-Mazzetti (1941) is adopted here but with considerable addition and emendation. The conspectus of the revised classification for the chinese species is as follows. Sect. 1. Saxifragastrum. Staminodes terete simple, rounded and discoid at the apex. Ser. 1. Saxifragastrum. Basal leaves general 3——5 rarely 2 or 6——9. Ser. 2. Rosulatae. Basal leaves 10——20, rosulate. Sect. 2. Cladoparnassia. Staminodes tereta, 2-lobed at the apex. Sect. 3. Odontohymen. Staminodes flattened, 5——7-dentate at the apex. Sect. 4. Nectarotrilobos. Staminodes flattened, 3-lobed sel-dom 4——5-lobed. Subsect. 1. Nectarotrilobos Connective not projected at the apex. Ser. 3. Luteae. Scape without leaf. Ser. 4. Nectarotrilobos. Scape with one leaf. Ser. 5. Lijiangenses. Scape with two leaves. Subsect. 2. Xiphosandra. Connective projected at the apex. Sect. 5. Nectarobilobos. Staminodes 2-lobed, with equal lob-es. Scape with two leaves. Sect. 6. Allolobos. Staminodes flattened, 5-lobed seldom 6-lobed, with unequal lobes. Sect. 7. Fimbripetalum. Staminodes deeply divided into 3 filiform branches, each ending in a globose gland at the apex. Ser. 6. Amoenae. Petals fimbriate at the lower margin. Ser. 7. Fimbripetalum. Petals fimbriate around the whole margin. Sect. 8. Nectaroquinquelobos. Staminodes deeply divided into 5 filiform branches, each ending in a globose gland at the apex. Ser. 8. Gansuenses. Petals fimbriate at the lower margin. Ser. 9. Nectaroquinquelobos. Petals fimbriate at the whole margin. Sect. 9. Parnassia. Staminodes deeply divided into 7——23 filiform branches, each ending in a globose gland at the apex. The genus Parnassia consists of 9 sections and about 70 species, widespread in alpine regions of northern hemisphere,mainly of Asia. In the present paper 59 species, i. e. 82 percent of the total number of the genus, are recognized from China, 46 being endemic. In the montane regions of southwest China concentrate most of them, about 48 species, belonging to 7 sections, mainly including the two primitive ones, Sect. Saxi-fragastrum and Sect. Cladoparnassia, and the two more advanced ones, Sect. Odontohymen and Sect. Nectarotrilobos. Thus Southwest China is considered to be the centre of distribution and differentiation and also probably to be the contre of origin of the genus Parnassia.
    A NEW SPECIES OF MICHELIA FROM CHINA
    Zheng Qing-fang, Lin Mu-mu
    1987, 7(1):  63-65. 
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    CHUHSINGIANUM,A NEW SUBGENUS OF SEDUM FROM CHINA
    Fu Kun-tsun
    1987, 7(1):  67-70. 
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    SOME ADDITIONS AND CORRECTIONS TO THE FERN GENUS PHANEROPHLEBIOPSIS CHING
    R. C. Ching
    1987, 7(1):  71-75. 
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    The genus Phanerophlebiopsis Ching was first proposed in 1965(Acta Phytotax. Sinica 10:115) with four species recognized.It seems quite certain that the genus has the province Kweichow as its centre of distribution and developmont thence it spreads eastwardly to the province Hunan, southwardly to Kwangsi and westwardly to the eastern part of Szechuan. The present paper adds four more species to this endemic genus, thus there being altogether eight species known of the region.
    NEW SPECIES OF TRAPA AND NAJAS FROM JIANGXI,CHINA
    Guan Shao-fei, Lang Qing
    1987, 7(1):  77-80. 
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    A NEW SPECIES OF TUPISTRA FROM GUANGXI
    Wan Yu
    1987, 7(1):  81-83. 
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    NEW TAXA OF MICHELIA FROM YUNNAN
    Law Yuh-wu, Zhou Ren-zhang
    1987, 7(1):  85-87. 
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    NEW SPECIES FROM ZHEJIANG
    Fang Yun-yi
    1987, 7(1):  89-93. 
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    TAXA NOVA LABIATARUM XINJIANGENSIUM
    Yang Chang-you, Wang Bin
    1987, 7(1):  95-103. 
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    STRUCTURE AND FUNCTION OF PLANT MICROBODIES
    Chen Zu-keng
    1987, 7(1):  105-126. 
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    This paper is a review article, which contains following contents:1. History of research and its classification on plant microbodies; 2. The morphology and ultrastructure feature of microbodies; 3. Distribution of microbodies in various plant tissues A. Angiosperm B. Gymnosperm C. pteridophyta D. Bryophyta 4. The function of plant microbodies; 5. The biogenesis of microbodies. Of which, the data of gymnosperm essentially are the result of original research on plant microbodies and are included some microphotographs of electron microscope.
    A PRELIMINARY STUDY OF PINUS YUNNANENSIS VAR.TENUIFOLIA FORMATION OF GUANGXI
    Wang Huen-pu
    1987, 7(1):  127-150. 
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    Pinus yunnanensis var. tenuifolia Formation is extensively distributed in the hills and mountains with an altitude from 300-1600m. along the lower Nanpanjiang river. 11 plant associations have been found in this area. They are described as follows:1. Pinus yunnanensis var. tenuifolia-Quercus Yuii-Wend-landia uvarifolia subsp. dunniana-Microstegium vagans+Pogonatherum paniceum Association. 2. Pinus yunnanensis var. tenuifolia-Quercus variabilis-Quercus yuii-Miscanthus floridulus+Pogonathernm paniceumAssociation. 3. Pinus yunnanensis var. tenuifolia-Quercus fabri-Vacci-nium sprengelii-Arundinela nepalensis+Pogonatherum pani-ceum Association. 4. Pinus yunnanensis var. tenuifolia-Schima wallichii-Rhodomyrtus tomentosa-Dicranopteris dichotoma Association. 5. Pinus yunnanensis var. tenuifolia-Wendlandia uvarifo-lia subsp. dunniana-Arundinella nepalensis+Pogonatherum pa-niceum Association 6. Pinus yunnanensis var. tenuifolia-Phyllanthus emblica-Eulaliopsis binnata+Heteropogon contortus Association. 7. Pinus yunnanensis var. tenuifolia-Vaccinium sprengelii-Cymbopogon caesius+Eulalia speciosa Association. 8. Pinus yunnanensis var. tenuifolia-Phyllanthus emblica-Eulalia quadrinervis Association. 9. Pinus yunnanensis var. tenuifolia-Arundinella mepalenisis+Cymbopogon caesius Association. 10. Pinus yunnanensis var. tenuifolia-Quercus yuii-Arun-dinella nepalensis Association. 11. Pinus yunnanensis var. tenuifolia-Adiantum flabellula-tum Association.
    NEW SPECIES OF THE GENUS UIMUS L. FROM NORTHEAST OF CHINA
    Nie shao-quan, Huang Gui-qin
    1987, 7(1):  151-154. 
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    EMBRYOGENESIS AND DYNAMICS OF STARCH OF KOREAN PINE
    Jin Chun-ying, Wang Ting-fen
    1987, 7(1):  155-162. 
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    In this paper, the observations on te embryogenesis and the process of distribution of starch were reported. Zygote of Korean pine is located at the middle upper part of the arche-gonium, During cell division, the spindle fibre formed by zygo-tes is at an angle to its major axis. The first mitosis produ-ces two free nuclei and during descending, they mitotically divide for the second time. The four free nuclei produced arrange ina tier. The third mitotic division results in eight free nuclei,arranging into two tiers, and the cell wall is formed. Sixteen cells are formed by the fourth division, and arrange in four tiers, forming aproembryo. After one and half months of growth and development, and the embryo selection stage, in the middle of July, it enters the period of young embryo development. In the first ten days of August, the young embryo already undergoes tissue and organ differentiation. At that Time, the starch gradually moves from the micropyle end to the combining site at the opposite end. Seeds ripen at the end of September.