サジラン属の葉柄の関節
スポンサーリンク
概要
- 論文の詳細を見る
Frond articulation in species of Loxogramme was observed anatomically in details. Abscission layer composed of several layered obtuse parenchyma cells is clearly distinguished between phyllopodium and stipe in mature fronds of L. salicifolia and L. saziran. The disarticulation occurs at this separation layer. Leaf scars protruding from rhizome which do not become lignified but tanniferous at the upper concave surface are formed after disarticulation. The abscission layer is formed already at youngest stage of the development of a frond. This abscission is the same structure as in some species of the Polypodiaceae. Thus, the frond of these two species is safely regarded to have articulation to the rhizome. Clear leaf scars are also observed in such species as L. avenia, L. formosana, L. involuta, L. parksii, and L. remotifrondigera. These species seem to have the same frond articulation type as L. salicifolia and L. saziran. The abscission layer is observed neither in L. grammitoides nor in L. lankokiensis. L. grammitoides has phyllopodium with scales on its surface and the shape of the cells is the same as that of L. saziran. The abscission is scarecely observed in small frond of L. salicifolia and Microsorium hancockii just like as in L. grammitoides. From the facts noted above, the lack of the abscission of the two species belonging to Loxogramme seems to relate the fact that these species have small frond with slender stipe.
- 日本植物分類学会の論文
- 1974-09-30
著者
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