中国耳蕨属高山耳蕨组的分类学研究

 高山耳蕨组的成员是中国西部、印度北部和喜马拉雅山区常见的蕨类。其成员为夏绿植物,叶片 薄而柔弱。秋季叶片枯萎后叶柄基部宿存在地面形成一个丛堆以保护幼芽,这显然是对高山严峻环境 的适应。作为高山地带特有类型,1972年日本蕨类学家Sigeru Daigobo将它们作为耳蕨属下的一个组 ——高山耳蕨组Sect．Lasiopolystichum Daigobo,这是合理的。Daigobo建立此组时只包含3个种,经过 对中国大量标本及有关文献的研究,现知在中国约有30种应归人此组,其中有3新种:红鳞耳蕨P．ru- fopaleaceum,石生耳蕨P.saxicola,康定耳蕨P．kangdingense;2新变种．裂叶耳蕨P．sinense var．loba- tum,条裂耳蕨P．mollissimum Var．laciniatum;1新组合,钝裂耳蕨P．integrilobum(Sorolepidium)。据羽片背面的小鳞片类型可将高山耳蕨组划分为2个系:穆坪系Ser．Moupinensia和中华系Ser．Sinensia。     

云南产耳蕨属半开羽耳蕨组的分类研究

 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。     

缅甸北部及中国西南部耳蕨一新种

Polystichum adungense ching et Fraser-Jenkins is described as new from N. Bur- ma and S. W. China     

蕨

在我看来,蕨是一种特立独行的植物. 　　蕨不开花,它的光滑亮绿的羽状叶片是一束束鲜花最好的陪衬.蕨也没有果实,而蕨芽菜是一种很好吃的食物,所含的蛋白质、矿物质、食用纤维素和多种维生素,是绿叶青菜所无法媲比的.它还具有清热祛火等药用价值,对人体大有裨益. 　　……     

蕨藻

这种热带藻是世界上最大的单细胞植物，而且它已经分化成了由叶，茎和根组成的复杂结构。     

玉龙蕨

芸芸众生中,有一类从不开花的植物,它们不产生种子,而是通过孢子繁殖后代。这些植物从远至约4亿年前一路走来,历经沧桑,在地球上繁茂生长,它们就是蕨类植物。     

光叶蕨

正在绿色植物王国里,蕨类植物是高等植物中较为低级的一个类群。在远古的恐龙时代,这些羊齿植物大都为优势物种,后来由于地质和气候的变迁,逐渐沦为劣势物种,甚至面临着灭绝的危险。这些现今仅存留于某一地区的属或种,也因此成为特有属或特有种,而且大部分为较矮小的草本植物。光叶蕨便是这样一种植物。它是我国特有的植物品种之一。     

薄鳞蕨属(中国蕨科)一新组合

承认中国蕨科薄鳞蕨属的独立性，把喜马拉雅地区分布的Cheilanthes duthiei 新组合到了该属。     

以蕨治砷

<正>说到工业污染"五毒"之一的砷,读者一定不会陌生。除了著名的三氧化二砷(砒霜)和硫化砷(雄黄),工业排放的亚砷酸盐、二甲基砷等剧毒物质更是令人谈之色变。动物自不必说,就连植物碰上砷也难免会叶片枯萎,根系受伤,进而全身枯萎死掉。然而,美国普度大学的研究者们近日却从一种蕨类中找到了一个抗砷的基因,他们希望这一成果今后能够被用来治理砷污染。     

顶育蕨属，中国槲蕨科一个新记录属

 Photinopteris J. Sm.,  a new recorded genus of Drynariaceae, is reported in this paper. It was found in the Xishuangbanna Nature Reserve. The occurrence of Photinopteris in southern Yunnan is of phytogeographical interest,  not only  adding an important genus to the Chinese Pteridophyta flora,  but also giving a fresh piece of evidence of the closely floristic relationship between this  area  and  south-easternAsia.  It is of great value for studies of the Pteridophyta flora of Yunnan.     

苍山蕨属的研究

eterachopsis was proposed by the senior author as an independent genus of the family Aspleniaceae in 1940 with 2 species.  Since then much study on its morpho- logy,  anatomy,  gametophyte and palynology has been carried out by Nayar,  Bir,  Chan- dra & Nayar and Chang et al.,  and they are of the opinion that the genus like Ceterach, is a comparatively primitive element in the family Aspleniaceae.  The queer zigzag pa- tern of cutting of lanceolate fronds appears extraordinary in the family Aspleniaceae, and also suggests its antiquity in evolution. So far only 3 species  (C.  dalhousiae,  C. paucivenosa and C. magnifica) are recognized,  the former from W. Himalayas,  also known from Africa,  while the latter two from W. S. China (Yunnan).  However,  in the past forty years the Chinese botanists have discovered 2 more species as new in N. W. Yunnan,  thus bringing the total known species of the genus up to 5.  The present paper is a brief summary on the genus Ceterachopsis,  which will be published in detail in the Flora Sinica vol. 4.       Pteridologists are also divided in their views regarding the generic status of Cete- rachopsis with 5 well-defined species in Yunnan and the East Himalayas.  We prefer to mintain it as a genus separate from Asplenium on account of its distinct morpholo- gical features.  It is to be hoped that more species may come to light in the mountainsin N. W. Yunnan through further exploration now under way.