GAMETOPHYTES OF 4 TROPICAL FERN GENERA REPRODUCING INDEPENDENTLY OF THEIR SPOROPHYTES IN SOUTHERN APPALACHIANS
GAMETOPHYTES OF 4 TROPICAL FERN GENERA REPRODUCING INDEPENDENTLY OF THEIR SPOROPHYTES IN SOUTHERN APPALACHIANS
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DOI：
10.1126/science.155.3767.1266
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发表时间：
1967-01-01
期刊：
影响因子：
56.9
通讯作者：
FARRAR, DR
中科院分区：
文献类型：
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作者：
FARRAR, DR
已知 4 种蕨类配子体通过芽孢进行无性繁殖和传播。虽然它们基本上属于热带雨林属，但现在已经发现这四种类型在北卡罗来纳州高地附近自然生长，作为阴暗潮湿岩石上的克隆。孢子体很少或不存在。这些配子体现在被鉴定为Grammitis nimbata (Jenm.) Proctor Grammitidaceae； Hymeno-phyllum tunbridgense (L.) J. Sm.，膜豆科； Vittaria lineata (L ) J. sM.，葡萄藤科；和毛滴虫属。可能代表几个物种，Hymenophyllaceae。一些幼年或矮化孢子体的存在有助于对革兰氏菌的鉴定；这是北美洲温带该种属和科的首次报告。蕨类配子体的生长和传播独立于相应的孢子体且远离相应的孢子体，这是一种新现象，应该在世界其他地区进行研究。
Vegetative reproduction and dispersal by way of gemmae are known to occur in 4 types of fern gametophytes. Although they belong to basically tropical rain-forest genera, all 4 types have now been discovered growing naturally in the vicinity of Highlands, North Carolina, as clones on shady, damp rocks. The sporophytes were rare or absent. The gametophytes are now iden-tified as Grammitis nimbata (Jenm.) Proctor Grammitidaceae; Hymeno-phyllum tunbridgense (L.) J. Sm., Hymenophyllaceae; Vittaria lineata (L ) J. sM., Vittariaceae; and Trichomanps. probably representing Several species, Hymenophyllaceae. Identification of the Grammitis was facilitated by the presence of some juvenile or dwarfed sporophytes; this constitutes the first report of this species genus, and family for temperate North America. Growth and spread of fern gametophytes independently of, and distant from, the corresponding sporophytes is a novel phenomenon which should be investigated in other parts of the world.