サジラン属の胞子

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タイトル別名
  • On the spores of Loxogramme
  • サジランゾク ノ ホウシ

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Mature spores of Loxogramme are observed in details. Some species of this genus have bilateral spores, and the others tetrahedral ones, though none of the species has both types of spores. This is certified also for Vittaria and Lindsaea. Tetrad formation is observed on the spores of some species of Loxogramme, comparing with that of the typical form of the type of tetrahedral tetrad; the granule zone which is observed at equatorial plane of heterotypic nuclear division is dissolved during homeotypic nuclear division. This type of tetrad formation is also observed at heterotypic nuclear division of L. saziran and L. salicifolia is not dissolved until the cell division occurs and bilateral tetrad is made. This type is observed in Microsorium hancockii and Dryopteris lacera. From the observations noted above, the spore character does not support positively to place Loxogramme in the Grammitidaceae.

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