开口箭属一新种及其核型和花粉形态

文章报道了新种屏边开口箭T．pingbianensis J．L．Huang et X．Z．Liu及其核型和花粉形态。屏边开口箭的核型公式为2n=38=14m+lOsm+8st+6t,具明显的二型性,属3C型。花粉粒为球形,无萌发孔沟,外壁具皱块状纹饰。从花结构、核型和花粉形态上看,屏边开口箭和伞柱开口箭T．fungilliformis Wang et Liang亲缘关系近,而且伞柱开口箭比屏边开口箭在一系列特征上都较特化。     

Two New Species of Sanicula L. (Umbelliferae) from China

Two new species of the genus Sanicula (Umbelliferae), S. pengshuiensis Sheh etZ.Y.Liu and S. oviformis X.T.Liu et Z.Y.Liu, are described from Sichuan Province, China.     

Singchia and Gunnaria, two new genera of Orchidaceae

Singchia Z. J. Liu ＆ L. J. Chen, a new orchid genus, is established based on the new species S. malipoensis Z. J. Liu ＆ L. J. Chen found in southeast Yunnan, China. The new genus is related to Pteroceras, from which it differs by having a lip with its basal margins immovably adnate to the lower part of the pendent column foot, a thin-walled spur, and very unequally and deeply split pollinia, each with a distinct caudicle. In addition to a discussion on Ascocentrum pusillum, a species of questionable placement, another new genus, namely Gunnaria S. C. Chen ex Z. J. Liu ＆ L. J. Chen, is set up and a new combination, namely G. pusilla （Aver.） Z. J. Liu ＆ L. J. Chen, is made. The new genus Gunnaria differs from its allyAscocentrum by having a cross-shaped pollinarium, sulcate or split pollinia, each with a distinct caudicle attached to a common linear stipe much longer than either pollinia or viscidium, and strongly incurved side lobes of the lip.     

A Cytogeographical Study on Clintonia udensis (Liliaceae)

The genus Clintonia has four species in North America and one in eastern Asia (Fig．1)．In this paper,the karyotypes and the intraspecific morphological and cytogeographic differentiations of ten populations of C．udensis from China are analysed,and the probable origin area of the genus is also discussed．The conclusions are as follows： (1)Based On the chromosome numbers 2n=28 from the North American species,the Japanese and Himalayan groups,the earlier investigators established x=14 as the basic chromosome number of Clintonia,and they thought that there was polyploid in this genus except for aneuploid only in C．borealis (Utech,1975;Utech and Suda,1975),but a few authors(Sen,1975;Wang et al,1993)pointed out the x=7 basic number of this genus based on 2n=14 in C．udensis from Primorskiy Kray of Russia(Skolovskaya,1966)and Yunlong,Yunnan Province of China(Wang et al,1993)respectively．Our result along with there reports by previous authors(see table 1)shows that at least two ploid levels exist in C．udensis,i.e．2n＝14 and 2n＝28．The diploids are widely distributed from northwest Yunnan of China to Primorskiy Kray of Russia,while the tetraploids are located in northwest Yunnan,Himalayas,Japan,and a narrow area in Mt．Hualongshan of southern Shaanxi(07 population)(Fig．2)．Therefore,the basic chromosome number of Clintonia certainly is x=7 ratherthan x=14,while 2n=28 in North America,Japan and Himalayan area are tetraploid, not diploid, According to the previous data,so far no diploid taxa of Clintonia has been found in North America and Himalayas．So we consider that the primitive type of Clintonia is in eastern Asia,and the secondary diversity center and the present distribution center of this genus are in North America． (2)C．udensis is widely distributed in eastern Asia(Fig．2);it has two cytotypes．The karyotypes for all the diploid populations are remarkablely similar. Taken together, they can be roughly repersented by the formula:K(2n)=14=2V+6J+2v+4j(2NOR+2j). The chromosomes range in length 25.55～12.78 μm, with the ratio of the longest to the shortest 2.0. The karyotype belongs to Stebbins (1971)2A(→2B). For the tetraploid taxa, except for 07 population, karyotypes are also identical and may be roughly symbolized as: K (2n)=28=4V + 12J + 4v+8j ( 2NOR + 6j ). The length of chomosomes is from 27.87 to 13.93 μm, with the ratio of the longest to the shortest 2.0, and thus the karyotype belongs to 2A(→2B). The karyotype of 07 population is similar to those of above tetraploid taxa but also has some differences, especially in the position of satellites and the morphology of 10th and 14th pairs of chromosomes. Its formula is K(2n)=28=4V+12J(2NOR+10J)+4v+ 8j(2n=28=10m+16sm(2SAT)+2st). The ratio of the longest (23.72μm)to the shortest(12.97μm) chromosomes is 1.83. The Karyotype belongs to 2A. And the distribution range of this population is very narrow. We think that it is probably a recent evolutionary event in C. udensis. (3)Wether Clintonia in eastern Asia has 1 sp. or 2 spp. or 1 spp. and 1 var. has been debated for a long period. According to our observation, within C. udensis, only the size of seeds is related to its ploidy level, i.e. diploid individuals have smaller seeds and tetraploid ones have larger ones; the colour of seeds is related to its geographic distribution, i.e. the materials from the Himalayas through Yunnan, Sichuan to eastern Qinling Range have pale brown seeds, while those from Mt. Lüliang, Shanxi Province via Hebei, Liaoning, Jilin to Siberia and Japan have dark brown seeds. Some other morphological characters, such as the size of leaves and fruits, inflorescence type and flower numbers between individuals in one locality, even within one populaion have evident variation. Therefore, we consider that evidence(see Table 4 )for separating C. alpina or C. udensis var. alpina from C. udensis is notsufficient.     

Ypsilorchis and Ypsilorchidinae,a new genus and a new subtribe of Orchidaceae

A new orchid genus, Ypsilorchis Z. J. Liu, S. C. Chen & L. J. Chen, is established based on Ypsilor-chis fissipetala (Finet) Z. J. Liu, S. C. Chen & L. J. Chen (basionym: Liparis fissipetala Finet). The new genus differs from Liparis and its allies by having two granular-waxy pollinia each with a somewhat elastic caudicle, deeply bilobed petals and strongly crisped-margined leaves with an apical awn to 1 mm long. These features are an indication of its distant relation to the members of the subtribe Liparidinae, and thus a new subtribe, Ypsilor-chidinae Z. J. Liu, S. C. Chen & L. J. Chen, is proposed.     

荞麦属2个野生荞麦种的染色体核型研究

对荞麦属皱叶野荞麦(Fagopyrum crispatifolium J.L.Liu)及其近缘种细柄野荞麦[F.gracilipes (Hemsl.) Dam.et Diels]的染色体核型进行了分析.结果表明,2个野生荞麦的染色体数目均为2n=4x=32,但二者在随体数目、染色体长度等方面差异明显,染色体核型不同,皱叶野荞麦的核型公式为:30m(4SAT)+2sm,细柄野荞麦的核型公式为:32m,属首次报道.     

Studies on the species of Sedum sarmentosum and S. angustifolium

The Chinese medicine “Chuipencao” is studied. But, as a matter of fact, this Chinese name represents two distinct forms, one with broad leaves and the other with narrow leaves. As a result of a comprehensive study on gross morphology, pollen morphology, histological structure, isozymes, GC analysis of chemical constituents of the plants in question has shown that the narrow-leafed form is different from the broadleafed form and therefore is considered as a new species, Sedum angustifolium Z. B.Hu et X. L. Huang sp. no     

彩云兜兰及其近缘种的研究

简要讨论了彩云兜兰及其近亲种的亲缘关系;描述了两个新种：缅甸兜兰Paphiopedilum burmanicum J．Y．Zhang et Z．J．Liu和短唇兜兰Paphiopedilum brevilabium Z．J．Liu et J．Y．Zhang;并提供了一个图版和有关5个种的分种检索表。     

A Study on Karyotype Differentiation of Allium fasciculatum (Liliaceae)

Karyotypes of three local populations of Allium fasciculatum Rendle were analyzed. The karyotype of the population from Dagze of Xizang was 2n=2x＝20=4m+10sm +4T+2t(2SAT), the one from Xiangcheng of Sichuan was 2n=2x＝20＝10sm+6t(2SAT)+4T, and the one from Lixian of Siehuan was 2n＝2x=20＝6m+10sm+2t (2SAT)+2T. Although there were differences in karyotypes among the three populations, they were very similar in morphological characters, except that plants in the Dagze population were lower. The karyotype of the Lixian population is considered to be a primitive one that has evolved into the more asymmetrical karyotypes of the Dagze population and Xiangcheng population by structural aberration. In the genus Allium, only four species, A. fasciculaturn, A. decipiens Fisch., A. kujukense Vved. and A. cheloturm Wendelbo. have so far been found to have the basic chromosome number of x＝10. According to karyotype characters and the distribution pattern of these four species, the basic number x = 10 may have different origins. At least that of A. fasciculatum is different from that of the other three species and might have originated the latest. A. fasciculatum was similar to A. hookeri Thwaites (the latter has x＝11) in karyotypical and morphological characters. Therefore, they are considered to have originated from a common extinct ancestor that had the basic number of x = 10.ey words Allium;A．fasciculatum Rendle;Karyotype differentiation     

中国豆科和樟科几种植物学名的订正

在编写《Flora of China》过程中,根据标本和文献的查阅,对国产豆科和樟科几种植物学名进行修订。本文记述5个新组合、4个新异名和一个恢复的种名。5个新组合是:垂果山蚂蝗Desmodium strigilosum var.pendenticarpum(C.Z.Gao Q.R.Lai) P.H.Huang,心叶山蚂蝗Desmodium flexuosum var.cordifoliolatum(P.C.Li) P.H.Huang,密毛长柄山蚂蝗Podocarpium densum(C.Chen et X.J.Cui)P.H.Huang,东北长柄山蚂蝗Podocarpium podocarpum var.mandshuricum(Maxim.) P.H.Huang和尖叶长柄山蚂蝗Podocarpium podocarpum var.japon-icum(Matsum.)P.H.Huang.4个新异名如下:李氏木姜子Litsea lii C.E.Chang及其变种能汉木姜子var.nunkao-tahangensis(Liao) Liao作为竹叶木姜子L.pseudoelongata Liou Ho的新异名,竹头角木姜子L.akosensis var.chitouchiaoensis Liao作为台湾木姜子L.hayatae Kanehira的新异名和密毛山蚂蝗Desmodium densum (C.Chen et X.J.Cui)H.Ohashi作为密毛长柄山蚂蝗Podocarpium densum (C.Chen et X.J.Cui)P.H.Huang的新异名。由于Litsea pedicellata一名被占用,恢复Litsea taiwaniana Kamikoti作为黄肉树合法的种名。     

两种芋属(天南星科)植物的核型研究

报道了芋属两种植物的核型,结果如下:异色芋2n=2X=28=18m+10sm,属于“2B”类型;花叶芋2n=2X=28=20m(8sat)+8sm(2sat),属于“2A”类型;花叶芋的核型及两个种之间的核型比较系首次报道。     

中国玉兰属两新种

描述了中国木兰科玉兰属两新种,奇叶玉兰(Yulania mirifolia D.L.Fu,T B Zhao etZ.X.Chen,sp.nov.)和青皮玉兰(Yulania viridula D.L.Fu,T B Zhao et G.H.Tian,sp.nov.)的形态特征和分布情况,并与近缘种进行了比较。     

中国链格孢属的分类研究Ⅲ.生于漆树科、天南星科和五加科植物上的新种与新记录种(英文)

本文报道生于漆树科（Anacardiaceae）植物上的两个链格孢新种,即盐肤木生链格孢（Alternar。rholcolaT．Y．ZhangetJ．Z．Zhang）和陕西链格孢（A．shaanxiensisT．Y．ZhangetJ．Z．Zhang）;生于天南星科（Aiaceae）植物上的两个新种,即海芋链格孢（A．alocasiaeTYZhapetM．X．Gao）和独角莲链格孢（A．typhoniiT．Y．ZhangetJ．Z．Zhang）,及生于五加科（Aialiaceas）植物上的一个中国新记录种,常春藤链格孢［A．hederae（Aim．＆Cam．）P．Joly］。新种模式标本保藏在山东农业大学植物病理学标本室（HSAUP）。     

New Plants of Plantago from China

One new species and one new variety of genus Plantago are describecd from China. They are P. densiflora J. Z. Liu and P. arachnoidea var. lorata J. Z. Liu.     

杏属（蔷薇科）一新种

发表了蔷薇科杏属的一个新种,即仙居杏(Armeniaca Xianjuxing J.Y.Zhang et Z.X.Wu),其与普通杏(Armeniaca vulgaris Lam.)的区别在于叶片两面具有短柔毛,花梗或果梗长1~1.2 cm,花瓣边缘钝锯齿或小裂片状,萼片边缘有小钝锯齿。     

翠雀属一新变型

本文发表了翠雀属一新变型,即白花翠雀ＤｅｌｐｈｉｎｉｕｍｇｒａｎｄｉｆｌｏｒｍＬ．ｆ．ａｌｂｕｍＴ．Ｊ．ＦｅｎｇｅｔＪ．Ｘ．Ｈｕａｎｇ．     

兰科一新属和新亚族——丫瓣兰属和丫瓣兰亚族

基于丫瓣兰Ypsilorchis fissipetala (Finet)Z.J.Liu,S.C.Chen &L.J.Chen(基名为裂瓣羊耳蒜Liparis fissipetala Finet)建立了兰科新属--丫瓣兰属Ypsilorchis Z.J.Liu,S.C.Chen&.J.Chen.新属与羊耳蒜属Liparis的区别点为:新属有两个粉蜡质花粉团:每个花粉团具1个多少有弹性的花粉团柄;花瓣二深裂;叶具强烈波状的边缘,其先端有一个长达1 mm的芒尖.这些特征表明了其与羊耳蒜亚族Liparidinae有明显的差别,为此,建立了一个新的亚族--丫瓣兰亚族Ypsilorchidinae Z.J.Liu,S.C.Chen &L.J.Chert.     

蜘蛛抱蛋亚族的花粉形态

本文研究并报道了百合科蜘蛛抱蛋亚族的花粉形态,主要结论如下：1．开口箭属含两种花粉类型即：(1)单槽、椭圆形;(2)无萌发孔、球形。具单槽、椭圆形花粉的种类含单型性核型,花形较小,柱头小而花柱短,雄蕊高于柱头;无萌发孔、球形花粉的种类则为单型性核型,花形较大,柱头常高度膨大,雄蕊常着生在花被筒基部。2．万年青属花粉为椭圆形,具单槽;蜘蛛抱蛋属花粉则为球形,无萌发孔;开口箭属花粉一部分与万年青属相似,另一部分则与蜘蛛抱蛋属雷同。3．蜘蛛抱蛋亚族中最原始的花粉类型为单槽椭圆形,具孔状或网状外壁纹饰。球形,无萌发孔,外壁具皱波状、瘤状或芽孢状纹饰的花粉为派生类型。4．蜘蛛抱蛋亚族种下花粉形状、萌发孔类型和外壁纹饰基本稳定,可作为分种特征。     

中国的红索藻属植物

记述了中国产红索藻属Thtorea Bory emend．Necchi的2种2变种,即棘刺红索藻T．hispida(Thorea)Desvaux emend,Sheath,Vis et Cole,棘刺红索藻小孢变种T．hispida var,microspora S．L．Xie et Z．X．Shi,蓝色红索藻T．vio—lacea Bory emend．Sheath,Vis et Cole和蓝色红索藻长毛变种T．violacea var．longipilosa S．L．Xie et Z．X．Shi．其中,蓝色红索藻T．violacea Bor yemend．Sheath,Vis et Cole为中国新记录,棘刺红索藻小孢变种T．hispida var．microspora S．L．Xie et Z．X．Shi和蓝色红索藻长毛变种T．violacea var,longipilosa S．L Xie et Z．X．Shi为新变种。