Taeniophyllum aphyllum (MAKINO) MAKINO に関する研究発芽及び幼植物の発育過程について(A. 自然科学)

概要

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In Kyoto, Taeniophyllum aphyllum (MAKINO) MAKINO is found to be growing on the trunks of several kinds of trees, especially on the underside of the branches of Cryptomeria Japonica. This orchid has several morphological characteristics unseen in other orchids. The young plant is a leaflike body and it grows very slowly. Observation was made on the growth of the young plants growing on the branches, especially, the earlier stage of the development was compared with that of the seedlings growing on a culture medium. The young plants grows to about 0.5mm in length in one year after germination, 1mm in 2 years, 1.8mm in 3 years, 2.9mm in 4 years, 4.5mm in 5 years, 7mm in 6 years, 9-12mm in 7 years, then the first root and the reduced leaf emerge at the end of the leaflike organ. This organ gradually shrinks and dies off after bearing about 7 roots. From the observation of tissues, it is assumed that the young plant of 3-7 years old is composed of a mixture of cotyledon and hypocotyl tissues.
京都府立大学の論文
1962-10-25