淡水红藻—新属──粒丝藻属  

GRANUFILUM A NEW FRESH WATER GENUS OF ACROCHAETIACEAE (NEMALTALES RHODO-PHYTA) FROM ZHEJIANG PROVINCE, CHINA

作　　者：赵雄飞[1] 

机构地区：[1]温州师范学院生物系,浙江325003

出　　处：《海洋与湖沼》1995年第4期431-438,共8页Oceanologia Et Limnologia Sinica

摘　　要：于1985年4月在浙江省泰顺县乌岩岭采集到淡水红藻标本。根据该藻藻体小、单轴真分枝丝状、有纹孔连结、生殖为单孢子和果孢子等特征，以及它具有有性生殖方法、在生活史中出现三个不同形态的植物体、无产孢丝和匍匐丝、有环带形色素体和蛋白核等特征，鉴定为淡水红藻的新属新种──粒丝藻属粒丝藻GranufilumrivularisZhaogen．etSp．nov.模式标本保存于温州师范学院内。In the present paper a new fresh water red alga Granufilum rivularis Zhao gen.et sp. nov. is described on the basis of the materials collected from Wuyanling, Tai-shun County, Zhejiang Province in the summer of 1985. Its systematic position is discussed. The type specimen is deposited in the Herbarium of the Department of Biology, Wenzhou Normal College.Granufilum rivularis sp. nov. is characterized by its thallus microscopic, fila-mentous, truly branched and monoaxial, without creeping filaments. Chromatophore annular, with 1-3 pyrenoids and with intercellular protoplasmic connection. Tri-chome and individual cell with conspicuous gelatinous sheath.In the chantrasia stage, the apex of the trichome repeatedly branched forming a purplish-brownish globose gelatinous body; filaments of uniserial cells, 8-10μm, globose cells 6-8μm diam. Main filaments and its branches equal in width. Mature thallus olive-green, with multiserial cells, main filaments conspicuous, 37-70μm wide, cells globose-ellipsoidal, 16-25μm diam., asexual reproduction by monospo-res, sexual reproduction by carpospores, growing on the rocks in flowing water.Tbe new genus, Granufilum is similar to the genus Audouinella in microscopic,purplish-brownish or olivegreen, filamentous, truly branched thallus, asexual repro-duction by monospore and sexual reprocuction by carpospore. It is different from Audouinella in the absence of the gonimoblast filaments, the trichomes and indivi-dual cellus conspicuous gelatinous sheatb, the shape of the globose or oblate cells,annular chromatophore, 1-3 pyrenoids, carpospores metamorpbosea from vegetative cells, and three different morphological thallus in its life history-

关 键 词：淡水 红藻 顶丝藻科 粒丝藻属 粒丝藻 藻类 

分 类 号：Q949.213[生物学—植物学]