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1.
黄淑美 《中国科学院研究生院学报》1993,31(2):105-126
本文分析溲疏属的重要形态特征的演化趋势，讨论亲缘属的系统位置和地理分布及区系特点，分类系统的修订和补充，并编写了分种检索表。认为雄蕊不定数，花瓣覆瓦状排列，花丝无齿，子房半下位的是属于原始性状，而雄蕊定数，花瓣镊合状排列，花丝具齿，子房下位的是进化性状，因此新溲疏组应包括在溲疏属内，该组与中间溲疏组是原始类群，而溲疏组是进化类群。国产52种被分为2组，4亚组和17系。溲疏属基本上是属于北温带分布类型，而我国的横断山脉至秦岭南部和华中一带为本属的现代分布和分化中心。 相似文献
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3.
曾沧江 《中国科学院研究生院学报》1983,21(2):151-152
Diplopanax is a genus described by H. Handel-Mazzetti in 1933 according to a
flowered specimen. It was originally considered as belonging to the family Araliaceae.
But fruit characters of this genus such as very large in size, oblong-ovoid in shape,
and containing only one seed in a locule which has a curved embryo and very hard
when dry etc., differ greatly from all other araliaceous plants, and evidently resemble
those of the cornaceous genus Mastixia Bl. In addition, the fruit is very similar to
the cornaceous fossil genus Tectocarya F. Kirchh., from which it may be distinguished
by the absence of 2 germinate pores in the endocarp. Consequently, the present
author tends to consider that the genus Diplopanax Hand.-Mazz. is best placed in
Cornaceae, not in Araliaceae.
相似文献
4.
向莉琳 《中国科学院研究生院学报》1994,31(3):258-267
本文对云南产的耳蕨属半开羽耳蕨组的12种植物进行了分类学研究，并在组下建立了两个新系，报道了4个新种和一个新组合，修订了该组植物的特征范围。 相似文献
5.
the present paper is a meterial of the genus Hemsleya Cogn. for flora of
China-Cucurbitaceae.
The genus Hemsleya was established by C. A. Cogniaux in 1889. By 1982 about 7
species had been discovered in China, and most of them are mainly distributed in S. W.
China, particularly in Yunnan and Sichuan. Their tubers have been used as a folk
medicine for a long time. However, we began to search for them, and meanwhile collect
and cultivate them, only about ten years ago. After a general survey and taxonomical
study, 20 species of Hemsleya are recorded from Yunnan in the paper. Among them 18
species and 3 varieties are new. All the types are kept in Herb. KUN.
According to the characters, of corolla and fruit also the seed condition, widely or
narrowly winged, proposed are four sections, namely: Sect. I. Craciliflorae; Sect. II.
Amabiles; Sect. III. Carnosiflorae and Sect. IV. Hemsleya, among which 3 are new. 相似文献
6.
The present paper deals with the genus Paeonia in Xinjiang, whose taxonomy has
been confused. Based on the field observation, population sampling and the examination of
herbarium specimens, a taxonomical revision is made in this paper. Two species are recog-
nized, i. e. Paeonia anomala L. and P. sinjiangensis K. Y. Pan. P. altaica K. M. Dai
et T. H. Ying is reduced to P. sinjiangensis and P. hybrida (= P. anomala var.
intermedia) is reduced to P. anomala. The diagnostic characters of the two species are de-
scribed and illustrated, and a map of their distribution in Xinjiang is presented. A key to
these two species is provided here.
1. Roots straight, not thickened; sepals all caudate, less frequently one or very rarely two
non-caudate ................................................ 1. P. sinjiangensis K. Y. Pan.
2. Roots fusiform or tuberous; inner three sepals non-caudate, less frequently one of them
caudate .............................................................. 2. P. anomala L.
key words Xinjiang; Paeonia; P. anomala; P. sinjiangensis; revision 相似文献
7.
黄淑美 《中国科学院研究生院学报》1987,25(5):384-389
Dichroa Lour., a small genus of Saxifragaceae, contains about 12 species,
ranging from the mainland of S. E. Asia southward to Pacific islands. But most of
the species are more restricted in distribution. Of the 12 recognized species, six are
known from South China and Indochina; three are confined to west and northwest
New Guinea; two are endemic to the Phillipines. Only one species is widely distributed
in S. E. Asia. In the present paper, the genus is divided into two sections and two
series based on the number of stamens and the characteristics of the ovary. One spe-
cies is described as new. 相似文献
8.
陈伟球 《中国科学院研究生院学报》1983,21(4):386-403
This paper presenta a brief introduction to the taxonomy and geographic distribu-
tion of the genus Wendlandia.
The genus Wendlandia in tribe Rondeletieae of the family Rubiaceae was proposed by Bartling in 1830. There are now more than ninety species throughout the world. It is distributed mainly in tropical and subtropical Asia. Thirty species, ten subspecies and three varieties are recorded in the paper. Among these, nine species, two subspecies and one variety are new. They are distributed mainly in Yunnan, Guizhou, Guangxi, Guangdong, Xizang and Taiwan Provinces. Only one species, namely W. longidens (Hance) Hutch. Extends northward to Hubei and Sichuan.
The classification of the genus in this paper is based on Cowan's system. It is divided into four series mainly by their stigmatic and staminal characters, namely Euexsertae, Subinclusae, Montigenae and Clavigerae. The first two series are each subdivided according to the stipule feature into two subseries, designated as Cuspidatae, Orbiculares, Tinctoriae and Paniculatae.
From the distribution patterns of the genus in the flora of China, we may understand:
1. The genus has the most species in China, where is its distribution centre, and Yurnan is the province richest in species of the genus.
2. There are twenty-one species, five subspecies and three varieties endemic to China. Most of these endemics have their distributional area confined to a single province, and some of them are confined to an even narrower district, with only a few of them extending beyond province boundaries.
3. The series Subinclusae Cowan has the most species not only in China but also in other regions of the world, whereas the series Montigenae Cowan has fewer species and they are all restricted to China.
The new species, new subspecies and the new varieties described in this paper are as follows: W. brevipaniculata W. C. Chen, W..villosa W. C. Chen, W. tinctoria (Roxb.)
DC. subsp. affinis How, W. laxa S. K. Wu, W. uvariifolia Hance subsp. pilosa W. C. Chen,
W. guangdongensis W. C. Chen, W. parviflora W. C. Chen, W. scabra Kurz var. pilitera
How, W. pubigera W. C. Chen, W. jingdongensis W. C. Chen, W. brevituba Chun et Howand W. oligantha W. C. Chen. 相似文献
9.
石铸 《中国科学院研究生院学报》1979,17(4):61-71
The present paper is an attempt to propose a preliminary taxomomic treatment of
the genus Hippolytia Poljak. and to analyse the geographical distribution of its com-
posite elements.
This small genus with 17 species is divided into 2 sections, namely, section
Anthodesma Shih and section Hippolytia. Anthodesma is a small section with 3 species
and is characterized by fascicled corymbs, campanulate and nitid involucres, rigidly
herbaceous phyllaries, and undershrubs, while Hippolytia consisting of 14 species is
characterized by corymbose inflorescence or glomerules or compund heads, cuneate and
unpolished involucres, herbaceous phyllaries with pitch black margines.
There are 12 species of Hippolytia in China, of which 3 are proposed as new in the
present paper.
Regarding the distribution pattern of Hippolytia, it is noteworthy to note that its
range of distribution forms a more or less U-shape as shown in map 2. It may be seen
that Hippolytia distributes in Central Asia-Sino-Himalaya-Median Asia. Section Antho-
desma Shih occurs in central Asia, while section Hippolytia in the whole Himalayan
region and northern Meridional Ranges and Median Asia.
There seems to be no center of species concentration within the total range of
Hippolytia, whose species are localized in distribution, for example, H. desmantha Shih
is known only from Qinghai provence (Yu-Shu-Hsien), H. alashanensis (Ling) Shih
is restricted to Ninghsia and central part of Kansu provence. It is interesting to note
that H. yunnanensis (J. F. Jeffrey) Shih and H. longifolia (Wall.) Shih are referred
to as vicarious species. The localization of the species distribution and the obvious
discontinuity of morphological characters between species indicate a remarkable geogra-
phical influence on the species formation of Hippolytia.
Hippolytia is an alpine genus of temperate zone of Asia, in which 64 per cent of
species occurs at high elevations of above 3300m. altitude, 30 per cent of species are
distributed in middle elevations of above 2200m. altitude. The life forms are micro-
undershrubs, erect perennial herbs, glomerule stemless herbs or stemless herbs. It is very
possible that its geographical origin and development may be linked up with occurance
of desert steppe, especially of alpine meadow vegetations in the northern temperate
zone of Asia.
With regard to the geographical elements to which each species of Hippolytia
belongs, it seems to indicate that H. trifida (Turcz.) Poljak., H. alashanensis (Ling)
Shih and H. desmantha Shih belong to the geographical elements of central Asia,
while H. yunnanensis (J. F. Jeffrey) Shih, H. glomerata Shih, H. tomentosa (DC.)
Tzvel., H. senecionis (Bess.) Poljak. H. longifolia (Wall.) Shih, H. kennedayi (Dunn)
Ling, H. syncalathiformis Shih, H. gossypina (Hook. f. et Thoms.) Shih and H. nana
(C. B. Clarke) Shih to Himalayan elements, and H. darvasica (C. Winkl.) Poljak., H.
megacephala (Rupr.) Poljak,, H. herderi (Rgl. et Schmalh.) Poljak. to Median Asia, H.
delavayi (W. W. Smith) Shih to North-West-Yunna.
相似文献
10.
潘锦堂 《中国科学院研究生院学报》1985,23(6):432-443
The Astilbe Buch.-Ham. ex D. Don was founded in 1912. There are
now 18 species throughout the world. USSR, Thailand, Indonesia, Bhutan, Nepal d Kashan-
mir each has only 1 species; Korea, Philippines and USA each has 2; India 3; Japan 6; and
China 7 (including 3 endemics and 1 new variety). And northeast China, north China and
northwest China each has 2; central China and southwest China each 4; eastern China 5.
Thus the distribution centre of this genus seems to be in the region covering Japan and
eastern, central, and southwest China.
This genus is divided into two sections: Sect. Simplicifoliae Engl. and Sect. Astilbe.
Sect. Simplicifoliae may be considered as the primitive one because it has 5 ordinary petals.
This section consists of about 10 species: 5 in China (east China 4; southwest China 3; ce-
ntral China, north China and northeast China each 2; Northwest China 1), 5 in Japan, 2
in Korea, 1 in Philippines and India each. According to the distribution of this section, the
author suggests that the centre of origin of this genus be in the forested parts from Japonthrough east China to southwest China. 相似文献