新疆贝母属的核型研究

作者研究了产于我国新疆的6种贝母以及引种的浙贝母的核型。其中5种为首次报道。     

竹亚科酸竹属的研究

在对竹亚科散生竹全面研究基础上，本文对酸竹属进行了系统的整理和研究，讨论了本属与相近属之间亲缘和区别。本文确认有6种，其中有1新组合和5个新异名。     

中国金腰属的研究(续)

This paper deals with the taxonomy and geographic distribution of the ge- nus Chrysosplenium L. in China.      Based on the characters and evolution of the seed, capsule, disk, ovary and leaf, the species of this genus can be grouped into 2 subgenera, 5 sections and 16 series.  There are 2 subgenera, 5 sections and 11 series in China.  They are as follows:      I.  Subgen. Gamosplenium Maxim. emend. J. T. Pan      Leaves alternate.      Lectotype: Chrysosplenium carnosum Hook. f. et Thoms.      1.  Sect. Alternifolia Franch. emend. J. T. Pan      Seeds smooth and glabrous.      Type: Chrysosplenium alternifolium L.       (1)  Ser. Nudicaulia Maxim. emend. J. T. Pan      Disk obscure or absent; ovary nearly half-inferior, sometimes mostly inferior; cap- sule generally subtruncate and emarginate at top and bilobed with equal and horizontal- ly divaricate or suberect lobes; seeds smooth and glabrous.      Type: Chrysosplenium nudicaule Maxim.       (2)  Ser. Alternifolia Maxim. emend. J. T. Pan      Disk 8-lobed; ovary nearly half-inferior; capsule generally subtruncate and emar- ginate at top, and bilobed with equal and horizontally  divaricate lobes;  seeds smooth and glabrous.       Type: Chrysosplenium alternifolia L.      2.  Sect. Nephrophylloides Turcz.      Seeds minutely papillose or pilose.      Type: Chrysosplenium sedakowii Turcz.       (1)  Ser. Macrophylla Franch. emend. J. T. Pan      Disk obscure or absent; ovary nearly half-inferior; capsule nearly truncate and em- arginate at top, and bilobed with equal lobes; seeds minutely papillose.      Type: Chrysosplenium macrophyllum Oliv.       (2)  Ser. Ovalifolia Maxim. emend. J. T. Pan      Disk generally 8-, rarely 4-, lobed, papillae absent around disk; ovary mostly infe- rior; capsule subtruncate and emarginate at top; seeds minutely papillose or pilose.      Type: Chrysosplenium ovalifolium M. Bieb. ex Bunge       (3)  Ser. Lanuginosa Hara, emend. J. T. Pan      Papillae numerous, brown around reduced disk; ovary mostly inferior; capsule ne- arly truncate and emarginate at top; seeds minutely papillose.      Type: Chrysosplenium lanuginosum Hook. f. et Thoms.        II.  Subgen. Chrysosplenium      Leaves opposite.      Type: Chrysosplenium oppositifolium L.      1.  Sect. Trichosperma J. T. Pan, sect. nov.      Capsule not truncate at top, and bilobed with subequal, suberect or divergent lobes.      Type: Chrysosplenium trichospermum Edgew. ex Hook. f. et Thoms.      This section is divided into 4 series in the world, with only 1 in China.      (1)  Ser. Nepalensia Maxim. emend. J. T. Pan      Disk obscure or absent; ovary generally mostly inferior;  cassule not truncate at top, and bilobed with subequal and suberect or divergent lobes; seeds smooth and gla- brous.       Type: Chrysosplenium nepalense D. Don      2.  Sect. Grayana J. T. Pan, sect. nov.      Capsule bilobed with distinctly unequal and ascending lobes.      Type: Chrysosplenium grayanum Maxim.      This section consists of 4 series in the world, with 3 series in China.       (1)  Ser. Sinica Maxim. emend. J. T. Pan      Disk obscure or absent; ovary nearly half-superior; capsule bilobed with distinctly unequal and ascending lobes; seeds minutely papillose.       Type: Chrysosplenium sinicum Maxim.       (2)  Ser. Esulcata Franch. emend. J. T. Pan      Disk (4)-8-lobed; ovary generally half-inferior; capsule bilobed with unequal and ascending lobes; seeds minutely papillose or pilose.      Lectotype: Chrysosplenium dubium J. Gayex DC.       (3)  Ser. pilosa maxim. emend. J. T. Pan      Disk obscure or absent; ovary nearly half-inferior; capsule bilobed with distinctly unequal and ascending lobes; seeds distinctly longitudinally ll-18-costate and minu- tely papillose or tuberculate on the ridge.       Type: Chrysosplenium pilosum Maxim.       3.  Sect. Chrysosplenium       Capsule nearly truncate and emarginate at top, and bilobed with equal and horizon- tally divaricate lobes.       Type: Chrysosplenium oppositifolium L.       (1)  Ser. Romosa J. T. Pan, ser. nov.       Disk distinctly 8-lobed, papillae sparse, brown around disk; ovary mostly inferior; ca- psule nearly truncate and emarginate at top, and bilobed with equal and horizontally divaricate lobes; seeds smooth and glabrous.       Type: Chrysosplenium ramosum Maxim.       This series is monospecific one, also occurring in China, namely C. ramosum Maxim.       (2)  Ser. Delavayi Hara       Disk distinctly 8-lobed, Papillae sparse, brown around the disk; ovary mostly infe- rior; capsule nearly truncate and emarginate at top, and bilobed with equal and hori- zontally divaricate lobes; seeds distinctly longitudinally 10-16-costate and transverse- ly striate on the ridge.       Type: Chrysosplenium delavayi Franch.         This series can be considered as the most advanced one in the Chrysaspleninm L.       So far, the Chrysosplenium L. comprises 64 species in the world, among which 1 spe- cies is found in North Africa, 2 in South America, 4 in Europe, 5 in North America, 56 in Asia, of which 3 occur in Sikkim, 5 Bhutan, 5 Mongolia, 6 north Burma, 6 Korea, 7 north India, 8 Nepal, 12 Japan, 17 U.S.S.R. (of which 3 also in Europe), 34 China (in- cluding 22 endemic species and 3 new species).       In China, Fujian and Guangdong Provinces and Zhuang Autonomous Region of Gu- angxi each has only 1 species, Taiwan, Zhejiang, Shanxi and Hebei Provinces and Uy- gur Autonomous Region of Xinjiang each has 2, Anhui, Jiangxi and Hunan Provinces each has 3, Qinghai Province 4, Heilongjiang, Liaoning and Guizhou Provinces each has 5, Jilin and Hubei Provinces each has 6, Gausu Province 8, Shaanxi Province and Xi- zang (Tibet) Autonomous Region each has 10, Yunnan Province has 11, Sichuan Provi- nce has 14.      Thus the distribution centre of this genus should be in the north temperate zone of Asia, and the region covering Shaanxi Gansu, Sichuan, Yunnan and Xizang may be regarded as an important part of this centre.      The 7 species of Ser.  Nudicaula Maxim. emend. J. T. Pan can be considered as the most primitive ones in this genus. They are mostly distributed in Shaanxi (Qin Ling), south Gansu, southeast Qinghai, southwest Sichuan and nothwest Yunnan of China. This region may be considered as the centre of the origin (or at least differentiation) of this genus.      The new species and the new varieties described in this paper are as follows: C. hy- drocotylifolium Levl. et Vant. var. emeiense J. T. Pan, C. taibaishanense J. T. Pan, C. lixianense Jien ex J. T. Pan, C. qinlingense Jien ex J. T. Pan.     

中国蕨类植物的一些新分类群

在编写《中国植物志》第五卷过程中，发现三叉蕨科、实蕨科和藤蕨科的一些新分类群，预   先发表。模式标本均存中国科学院植物研究所。       

云南鳞毛蕨属植物分类概要

本文研究云南产鳞毛蕨属植物的属下分类并列出所有的种类。该属植物在云南现知至少有88种，属下可划分为3个亚属和12个组。为了使这些类群之间的特征轮廓清晰，本文提供了分亚属及分组的检索表。     

从染色体数目、幼枝的解剖特征探讨新疆的沙拐枣属内的某些进化关系

 There are more than 20 species of Calligonum in China, of which 17 are known from Xinjiang.  They are divided into four sections.  This paper aims to study the evolutionary relations of some species of Calligonum in Xinjiang.  The chromosome numbers of 13 species and the anatomic structures of young branch of 8 species have been examined.                 Among 13 species, the, basic chromosome number x=9.9 species are diploids.  4 species are tetraploids.       The evolutionary relations of these plants are arranged as follows:      Section Calligonum (Fisch. et Mey.) Borszcz.                 1.  C. junceum (Fisch. et Mey.) Litv.       Section Pterococcus (Pall.) Borszcz.            2.  C. leucocladum (Schrenk) Bge.            3.  C. aphyllum (Pall.) Gürke.            4.  C. rubicundum Bge.       Section Calligonum   ,.     5.  C. cordatum Eug. Kor.            6.  C. densum Borszcz.                7.  C. klementzii A. Los.       Section Medusa Sosk et Alexandra            8.  C. mongolicum Turcz.                 9.  C. pumilum A. Los.           10.  C. ebi-nuricum Ivanova           11.  C. arborescens Litv.           12.  C. caput-medusae Schrenk           13.C. roborovskii A. Los.     

几种人参属植物的细胞分类学研究

                                                             摘    要     1．观察到四种人参属植物的体细胞染色体数目为：竹节参(P．japonicus)   2n＝24，三七(P．notoginseng)2n＝24，人参(P．ginseng)2n＝44，西洋参   (P．quinquefolius)2n＝48。其中，野生于江西省庐山和井冈山的竹节参的体细   胞染色体数目，不同于日本植物(2n＝48)；三七的体细胞染色体数目则为首次   报道。     2．分布区最广的二倍体物种竹节参，应是本属中较原始的类群，四倍体物   种人参、西洋参等可能是本属中较进化的类群。  这个结论不同于化学分类学所   得到的结果。     3．结合这四个种的地理分布资料分析，我们认为：我国的西南地区是本属  的现代分布中心，也是本属的最大变异中心，很可能是本属的始生中心。     

分支分类学的一种计算方法——最小平行进化法

 本文是“分支分类的一种计算方法—最大同步法”一文的姐妹篇。两种方法运算过程基本相同, 不同之处乃是最小平行进化法利用平行进化的概念,首先确立两个分支单位相结合时产生平行进化 的步数,即平行进化系数的计算公式,对所有待结合分支单位间计算平行进化系数。然后根据俭约性 原理,要获得最俭约演化树谱图,应该尽可能减少平行进化,也就是说在选择结合的分支单位时, 选择平行进化系数最小者优先结合。于是建立起一种新的分支分类运算方法。两种方法的思路完全不 同,从原理上讲对某些数据,最小平行进化法优于最大同步法,但后者运算量较大。如果将两种思路 兼顾,可以得出由这两种方法相结合而产生平行同步综合法．桔梗科6个种的数据作为例子进行运算说明。