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。     

狗脊化学成分研究

从狗脊（Woodwardia japonica(L.f.)Sm)中分离得到五个化合物,经解析,分别鉴定为：山柰素-3-O-α-L-（4-O-乙酰基）鼠李糖基-7-O-α-L-鼠李糖甙（kaempferol3-O-α-L-（4-O-acetyl)rhamnopyranoside-7-O-β-L-rhamnopyranoside)(Ⅰ）,山柰素-3-O-α-L-鼠李糖基-7-O-α-L-鼠李糖甙（kaempferol3-O-α-L-rhamnopyranoside-7-O-α-L-rhamnopyanoside)（Ⅱ）,狗脊蕨酸（woodwardinic acid)(Ⅲ）,β-谷甾醇（β-sitosterol)(Ⅳ）,胡萝卜甙（daucosterol)(Ⅴ）,这五个化合物均系首次从该植物中获得。     

国产蹄盖蕨属软刺蹄盖蕨组植物的研究

作者对国产蹄盖蕨属软刺蹄盖蕨组植物从形态分类和地理分布上进行了研究,共计载了23种。其中Athyrium densisorum,A.medogense和A.chingianum为新种,A.paranigripes为一新名称。文中还附有分类检索表,每种都有文献、异名和标本引证及地理分布。     

中国复叶耳蕨属新分类群(三)

本文报导了复叶耳蕨属4新种:近异羽复叶耳蕨,Arachniodes para-simplicior Ching ex Y.T.Hsieh,sp.nov.;凤阳山复叶耳蕨,Arachniodes fengyangshanensis Ching et C.F.Zhang ex Y.T.Hsieh,sp.nov.;孟连复叶耳蕨Arachniodes menglianensis Y.T.Hsieh.sp.nov.; 披针复叶耳蕨Arachniodes lanceolata Y.T.Hsieh,sp.nov.。     

北京蹄盖蕨科孢于形态的研究I.冷蕨属、羽节蕨属、短肠蕨属

本文利用光学显微镜和扫描电子显微镜对北京产蹄盖蕨科3属4种孢子进行了详细观察,对每个种的形态特征进行了描述。讨论了各属、种间的差异,为蹄盖蕨科系统分类及孢粉学研究提供资料。     

中国铁角蕨科铁角蕨属一新记录杂交种——东方铁角蕨

该研究报道了采自山东省泰安市泰山的铁角蕨科铁角蕨属一中国新记录植物——东方铁角蕨(Asplenium×akaishiense Otsuka),并对其形态特征进行了描述。该物种形态介于过山蕨(A. ruprechtii Sa. Kurata)与细茎铁角蕨(A. tenuicaule Hayata)之间,可能是二者的自然杂交种。     

Ultrastructure of the Mature Egg and Fertilization in the Fern Ceratopteris thalictroides

The ultrastructure of the mature egg and fertilization in the fern Ceratopteris thafictroides （L.） Brongn. were observed by transmission electron microscopy. The results revealed that the mature egg possesses an obvious egg membrane at the periphery of the egg. Furthermore, a fertilization pore was identified in the upper egg membrane of the mature egg. The structure of the pore is described for the first time. The fertilization experiment indicated that spermatozoids crowd into the cavity above the egg through the neck canal of the archegonium; however, only one of these can penetrate into the egg through the fertilization pore. Immediately on penetration of the spermatozoid, the egg begins to shrink. The volume of the fertilized egg decreases to almost one-half that of the unfertilized egg. As a result, the protoplasm of the fertilized egg becomes dense and opaque, which may lead to a situation where the organelles of both the egg and the fertilizing spermatozoid become indistinguishable. Simultaneously, abundant vesicles containing concentric membranes or opaque materials appear near the fertilization pore in the cytoplasm of the fertilized egg. These vesicles are considered to act as a barrier that prevents polyspermy. The present study provides a new insight into the ultrastructure of the mature egg and the cytological mechanism of fertilization in ferns.