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选择中国复序苔草亚属6组4亚组的代表植物14种,进行了叶片解剖学研究,观察了其横切面
和表皮特征,证明上述特征在各类群之间存在差异,具有一定的系统学意义。这14种植物叶片的横切
面和表皮都具有一些原始的性状,表明复序苔草亚属中的植物可能在苔草属中是较原始的。在所观察
的植物中,Sect．Polystachyae植物叶片解剖学特征比较一致,说明此组的建立比较合理;而Sect．Indicae
组已有明显分化,尤其是Carex scaposa C．B．Clarke和C．densifimbriata Tang et S．Y．Liang
与其它植物明显不同,而且其外部形态特征在复序苔草亚属中也比较独特,因此赞成将它们及其近缘类群做为一个组而非亚组。 相似文献
4.
本文对我国苔草属二柱苔草亚属Subgen．Vignea作了系统排列，并提出以下几点的看法：
1．二柱苔草亚属是苔草属中比较自然的一个类群，我国有48种、7亚种和1变种，隶属于16个
组。根据Takhtajan的世界植物区划，将它们分成4种成分，即：(1)环北方植物地区成分，占总数的
20．4％；(2)东亚植物地区成分，占总数的55.5％。实际上，只有4个分类群出现于中国-喜马拉雅森
林植物亚区，而其余的都均分布于中国-日本森林植物亚区，并且在这一亚区内有8个特有成分，占特
有成分总数的61.5％；显然，中国二柱苔草亚属在中国-日本森林植物亚区内的分化较其他地区更为强
烈；(3)伊朗—吐兰植物地区成分，占总数的16.7％；(4)印度支那植物地区成分和印度植物地区成
分，占总数的7.4％。
2．高节苔草C．thomsonii和云雾苔草C．nubigena类群是Subgen．Vignea中较为原始的种类，
它们为印度支那植物地区和印度植物地区成分。这样非但Subgen．Indocarex原始类群分布于东南亚
和马来西亚，而Subgea．Vignea的原始类群也分布于东南亚，这也是对Nelmes提出Carex起源于印度-马来西亚地区的一个佐证。 相似文献
5.
One new section and one new species of the genus Carex (Cyperaceae)
are described from Anhui Province, China. i. e. Sect. Cyclostyliferae and Carex
shuchengensis S. W. Su et Q. Zhang. 相似文献
6.
戴伦凯 《中国科学院研究生院学报》1994,32(2):173-189
Sixteen new species and two new varieties of the genus Carex are described from China. 相似文献
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本文用扫描电镜观察了泽苔草的花器官发生过程，观察结果表明：花萼以螺旋状方式向心发生，花瓣以接近轮状方式近同时发生，不存在花瓣雄蕊复合原基。雄蕊和心皮均以轮状向心方式发生，6枚雄蕊分两轮分别在对萼和对瓣的位置先后发生，至发育的后期排成一轮，但仍分别处于对萼和对瓣的位置；随后发生的第一轮3个心皮原基与3枚萼片相对，第二、三轮心皮原基分别为1~3个，与前一轮心皮相间排列向心发生。本文首次揭示了泽苔草花被的外轮3个萼片螺旋状发生方式，这种螺旋状方式很可能是泽泻科植物的花部结构在进化过程中适应环境而保留下来的一种较原始的叶性特征。 相似文献
9.
通过扫描电镜观察了宽叶泽苔草Caldesia grandisSamuel.的花器官发生。宽叶泽苔草 的萼片3枚，逆时针螺旋向心发生 ；花瓣3枚，呈一轮近同时发生，未观察到花瓣_雄蕊复合原基；雄蕊、心皮原基皆轮状向心 发生，最先近同时发生的6枚原基全部发育成雄蕊，随后发生的6枚原基早期并无差别，在发 育过程中逐渐出现形态差异，直至其中1－4枚发育成心皮，其余的发育成雄蕊；而后的几轮 心皮原基，6枚一轮，陆续向心相间发生。本文揭示了3枚萼片螺旋状的发生方式，并推测这种螺旋方式是泽泻科植物进化过程中保留下来 相似文献
10.
三江平原地区毛果苔草群落的研究 总被引：3，自引：0，他引：3
毛果苔草（Carex lasiocarpa）群落是三江平原地区沼泽植被的主要类型，分布广，面积大。毛果苔草不但是群落的优势种，而且是形成泥炭的最主要的造炭植被。本文主要探讨毛果苔草的基本特征：①生物学生态学特性；②毛果苔草和泥炭形成关系；③毛果苔草的养分和化学元素特性； 三江平原、毛果苔草群落、沼泽植被 相似文献
11.
The present paper, mainly dealing with phytogeographical, Cytological and Palynolo
gical studies on Chinese Stachyuraceae, is the first part of a series of contributions to systematics of this family. As we know, Stachyuraceae, a monogeneric family, is endemic to
East Asia, with a strong differentiation in China. Systematic position of the family is still uncertain. Undoubtedly, multidisciplinary studies on it wisl give a better understanding of plant differentiation in East-Asiatic floristic region and systematic position of the family.
The distribution of all the 9 Chinese species of Stachyurus have been studied on the basis of morphogeographical method. The status of some taxa has been changed as follows: Stachyurus chinensis Franch. ssp. latus (Li) Y. C. Tang et Y. L. Cao, stat. nov. S. chinen-sis Franch. Ssp. cuspidatus (Li) Y. C. Tang et Y. L. Cao, stat. nov. S. chinensis Franch. ssp. brachystachyus (C. Y. Wu et S. K. Chen) Y. C. Tang et Y. L. Cao, stat. nov. S. salicifolius Franch. ssp. lancifolius (C. Y. Wu) Y. C. Tang et Y. L. Cao, stat. nov., S. yunnanensis Franch. var. pedicellatus Rehd. and S. oblongifolius Wang et Tang being reduced as synonyms of S. yunnanensis Franch. From morphological point of view, we would consider that sect. Callosurus is more primitive and its present area might be the preservation center of the family.
In this paper the chromosome numbers of 5 taxa, i.e. Stachyurus yunnanensis, S. chinensis ssp. chinensis, S. chinensis ssp. cuspidatus, S. salicifolius ssp. salicifolius, S. retusus, are reported for the first time. Along with the chromosome countings of S. himalaicus and S. sigeyosii by S. kurosawa, we come to the conclusion that all the species so far studied have 24 small somatic chromosomes (2n=24).
The pollen grains of 6 taxa, i.e. Stachyurus yunnanensis, S. obovatus, S. himalaicus, S. chinensis ssp. chinensis, S. salicifolius ssp. salicifolius, S. retusus were also examined. Together with the observations of G. Erdman and Huang Tsengchien on S. himalaicus, it seems that the pollen grains of the genus Stachyurus are rather uniform in morphology. The pollen grains of sect. Callosurus are tricolporoidate, while those of sect. Stachyurusare tricolporate. Two pollen types, representeb by the two sections, though not strongly distinct, may be considered as further evidence of the validity of the two taxa as section.
Sexuality of flowers is also disscussed in the paper. According to our observationon six species, i.e. Stachyurus yunnanensis, S. obovatus, S. himalaicus, S. chinensis, S. salicifolius, S. retusus, the plants are dioecious, which supports T. Makino's observation on S. praecox and H. Hara's on S. himalaicus. Female flowers have relatively large pistils and short stamens with empty anthers, while male flowers have smaller sterile pistils and longer stamens with well developed anthers. 相似文献
12.
中国毛茛科植物小志(十五) 总被引：1，自引：0，他引：1
王文采 《中国科学院研究生院学报》1993,31(3):201-226
在本文中澄清了一些错误鉴定；一些学名证实不能成立，成为异名；对偏翅唐松草的种下分类
群做出修订，并给出新的区别特征；做出锐棱铁线莲系的分种检索表；对渐尖铁线莲群各种的亲缘关
系进行了初步讨论；描述了1新系，3新种，3新变种，2新变型；做出1新组合，4新等级，并拟出1新名；报道了拳距瓜叶乌头、星果草和直梗高山唐松草的国外分布。 相似文献
13.
程用谦 《中国科学院研究生院学报》1993,31(4):362-367
The genus, Ainsliaea DC. from China is revised in this paper. Three
species, A. nana Y. C. Tseng, A. pingbianensis Y. G. Tseng and A. trinervis Y.
C. Tseng, are newly described; two species, A. chapaensis Merr. and A.
angustifolia Hook. f. et Thoms. ex C. B. Clarke are new records for China and
two new combinations, A. apteroides (Chang) Y. C. Tseng and A.
macrocephala (Mattf.) Y. C. Tseng, are made. In addition, one species, A.
hypoleuca Diels ex Limpr. and four varieties, A. bonatii Beauverd var.
arachnoidea Beauverd, A. pteropoda DC. var. leiophylla Franch., A. elegans
Hemsl. var. tomentosa Mattf. and A. glabra Hemsl. var. tenuiculis (Mattf.)Chang, are reduced to synonyms. 相似文献
14.
在观察大量标本和野外考察的基础上，认为Nannoglottis souliei (Franch．)Ling et Y．L. Chen应作为N．gynura (C．Winkl．)Ling et Y．L. Chen的异名。 相似文献
15.
张志耘 《中国科学院研究生院学报》1986,24(4):297-303
The present paper deals with taxonomic studies on the genera Lathraea
Linn. and Christisonia Gard. (Orobanchaceae) in China. In the genus Lathraea, only a
single species in China, L. japonica Miq., is recongnized in the paper. It occurs in sou-
thern Shaanxi, southern Gansu, southeastern Sichuan, northern Guizhou and northern
Guangdong, also in Japan. L. miqueliana Franch. et Sav., L. chinfushanica Hu et Tang
and L. japonica Miq. var. miqueliana (Franch. et Sav.) Ohwi are treated as new synon-
yms of L. japonica Miq. in this paper.
In the genus Christisonia, the most of collections from China, which were identi-
fied as C. sinensis G. Beck before, are treated as a new synonym of C. hookeri C. B.
Clarke. A few collections of this genus from China, which were mistakenly described
as Gleadovia lepoense Hu snd G. kwangtungense Hu, should be transferred to Christi-
sonia hookeri C. B. Clarke. It is distributed in southeastern and south China, westwards
to the Himalayas. 相似文献
16.
将太行榆 Ulmus taihangshaneasis S．Y．Wang并入脱皮榆U．lamellosa Wang ex S．L．Chang ex L．K．
Fu作为新异名；将毛叶朴Celtis pubescens S．Y. Wang et C．L. Chang并入朴树C．sinensis Pers．作为新异名。 相似文献
17.
乌蒙杓兰及其近亲种 总被引：1，自引：0，他引：1
陈心启 《中国科学院研究生院学报》1985,23(5):369-375
In addition to describing a new species, Cypripedium wumengense, as well
as a new variety, C. bardolphianum var. zhongdianense, nomenclatural and taxonomic
notes are made on its allies and the division to which they belong. They are ltrge]y
found in the Hengduan Mountains in southwestern China, characterized by the absence
of bract, havirg lip more or less covered with small wart-like outgrowths, and that as
the capsule matures the scape becomes much elongated. Six species of this group have
hitherto been reported, of which, however, C. ebracteatum and C. nutans are regarded
here as conspecific with C. fargesii and C. bardolphianum respectively. Thus, including
the new taxa described here, it composes five species and one variety: C. bardolphianum
W. W. Sm. et Farrer (var. bardolphianum and var. zhongdianense S. C. Chen), C. mic-
ranthum Franch., C. fargesii Franch., C. margaritaceum Franch. and C. wumengense
S. C. Chen. They are all grouped here into the same section, Sect. Trigonopedium
(Franch.) Pfitz., the oldest legitimate name of this group in the rank of section. 相似文献
18.
潘锦堂 《中国科学院研究生院学报》1991,29(2):189-189
A new status, Rodgersia aesculifolia var. henricii (Franch.) C.Y.Wu, is proposed,
and two new varieties, i. e. R. sambucifolia var. estrigosa J.T. Pan, and R. pinnata var. strigosa J. T. Pan are described in this paper. 相似文献
19.
20.
记述了菊科6个属的一些新分类群和新分布，包含1个新组、3个新种、3个新变种、1个新名称、1个新组合和5个种的新记录。这些新分类群是黄鹌菜属蓝舌组、振铎黄鹌菜、蓝花黄鹌菜、青海乳苣、黄苞垂头菊、尼泊尔橐吾和半裂橐吾。 相似文献