苦竹亚族的修订

This paper deals with the taxa of tribe Arundinarieae Steud. subtribe Pleiobalastinae Keng and Keng f. which comprised three genera (Pseudosasa Makino, Pleioblastus Nakai and Brachystachyum Keng) when it was established in 1957. With the analysis of morphological characters and geographical distribution, a number of revisions connected with the taxon are made as follows:      (1)  Genus Brachystachyum Keng is transferred to the tribe Shibataeeae Nakai ac- cording to its false inflorescence.      (2)  Genus Pseudosasa Makino is transferred to subtribe Sasinae Keng f. according to our study on the numerical taxonomic method.      (3)  Some species of Pleioblastus Nakai established by Keng and Keng f. should be revised. Pleioblastus actinotrichus (Merr. and Chun) Keng f. should be Ampelocalamus actinotrichus (Merr. and Chun) S. L. Chen, T. H. Wen and G. Y. Sheng in subtribe Tham- nocalaminae Keng f.; Pleioblastus dolichanthus (Keng) Keng f. is the synonym of Sinobam- busa tootsik (Sieb.) Makino, belonging to tribe Shibataeeae Nakai. The rest species remain in this genus. Since the genus Pleioblastus is related to genus Arundinaria Michaux., subtribe Pleioblastus Keng and Keng f. does not seem to have a reason to be retained as a subtribe in tribe Arundinarieae Steud., according to the newest Code (1978). A part of it should be a synonym of subtribe Arundinariinae and we may cite it as follows: Subtribe Arundinariinae——Subtribe Pleioblastinae Keng and Keng f. pro parte, syn. nov. The other parts of it should be transferred to other subtribes or tribes.       In addition, one new variety in Branchystachyum, two new species, one new variety in Pseudosasa and six new species, three new varieties in Pleioblastus, are described in this paper.     

刺毛头黍属——禾草一新属

综合研究凤头黍属与其邻近属的叶片表皮微形态、颖片及内、外稃等特征后，发表禾本科一新属——刺毛头黍属。     

菰属系统与演化研究——花粉形态

本文首次报道了菰属Zizania L. 及其有关属，共7属，13种，3变种，1变型的花粉形 态。通过光学显微镜和扫描电镜，对其花粉的形状、外壁的层次及纹饰等进行了观察。经过研 究，笔者认为：  菰属应置于禾本科稻族内；菰属在稻族内的演化及菰属内的种间演化均存在 平行演化的现象；菰属在全世界有4种2亚种。这些结论大都吻合笔者对其它形态特征的研 究结果。     

应用数量分类探讨鹅观草属的归属问题

研究全世界鹅观草属只Roegneria C．Koch中绝大多数种类与其有关属(冰草属、披碱草 属、偃麦草属及赖草属)的外部形态、解剖、细胞等30个性状，应用相关系数抑或距离系数以及各种聚类方法组合所得出的树系图，均明确显示鹅观草属应归入披碱草属。     

中国散生竹类的数量分类和确定分类等级的探讨

  In this paper, 21 species representing 13 genera were studied by means of humeri- cal taxonomic methodes.  One geographical and 52 morphological characters were used. The correlation coefficients were  computed by standardized data, and the various clus- tering methods were performed on the correlation matr x.  The UPGMA clustering method was selected as the optimal one and its results were shown in  the form of dendrograms.      We present a simple method to construct the joint and broken lines by which the boundary of the genera, subtribes and tribes in the dendrogram is determined.      By means of numerical taxonomic methods, we can easily work out a systematic dendrogram and the following taxonomic treatments are easily proposed:       (1)  Sasamorpha sinica (Keng) Koidz. should be reffered to the genus Sasa Makino & Shibata.       (2)  Pseudosasa amabilis (McClure) Keng f. should belong to the genus Pseudosasa Makino and should not be referred to the genus Arundinaria Michaux.       (3)  The genus Brachystachyum Keng should be considered as a separate one.       (4)  The genus Pleioblastus Nakai should not be combined with the genus Arun-dinaria Michaux, but kept as an independent one.