Taxodiaceae 花粉の同定について

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The present paper deals with the results of investigations on the identification of Taxodiaceae pollen. The pollen grains of seven genera of Metasequoia, Taxodium, Glyptostrobus, Cryptomeria, Sequoia, Cunninghamia and Sciadopitys belonging to Taxodiaceae have the same type in each other and there are often the cases to confuse the identification of Taxodiaceae pollen at the time of pollen analysis. The writers fully observed Taxodiaceae pollen using the identification sample used in former years, and explained the pollen form, and then illustrated the typical types in them. The results are summarized as follows : 1. The materials of modern pollen were treated with Conc. HCl : 10% NaOH and Acetolysis method, then served for microscopic observations. 2. The materials of fossil pollen : i). Alluvium peat The Tashirogata peat deposits, Akita Pref. (peat bog) ii). Diluvium lignite The village of Nishigo lignite bed, Yamagata Pref. (out-crop) iii). Pliocene lignite The village of Hukuhara lignite bed, Yamagata Pref. (coal-mine and out-crop) The Minowa lignite bed, Nigata Pref. (out-crop) The above mentioned materials were treated by acetic anhydride method, Nitric acid method and Alkaline method of various concentrations, and their pollen grains were extracted, and then served for the microscopic observations. 3. According to the results of observations of i). Size of diagram of the pollen grains ii). Surface stracture of the pollen membrane iii). Shape of papilla iv). Shape of germinal pore, it has been clarified that by means of a few above mentioned points, the identification of Taxodiaceae pollen is possible at least in genera kept relatively as Taxodiaceae pollen. Plate 1 and 2 give the typical types detected under the microscopic observations of modern pollen and fossil pollen. The identification of the species in each genera must wait for future studies.
京都府立大学の論文
1956-09-01

Taxodiaceae 花粉の同定について

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