蘚類オオキヌタゴケ及びキノクニキヌタゴケの原糸体形成

概要

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Oedicladium doii (Sak.) Iwats. and Palisadula chrysophylla (Card.) Toy. belong to subfam. Oedicladioideae of the Pterobryaceae. Oedicladium and Palisadula are taxo-nomically closely related. Although Palisadula is separated from Oedicladium in possessing different peristome teeth, both genera have in common characters such as papillose rhizoids, spinose-serrate pseudoparaphyllia, filamentous and papillose gemmae in the axils of leaves, a chromosome number of n=6 (rare in pleurocarpous mosses), among others. The sporelings of these two species belong to the Macromitrium-type. The protonemata of both are papillose, which have never reported before for bryophytes. In these two species, many chrolonemal branches grew upward, but no caulonema was formed during early development. Older chrolonemal branches are very fragile, brownish and form thicker walls. Broken chrolonemal branches germinate easily on agar. Morphologically these chrolonemal branches are very simillar to the filamentous, papillose gemmae which are found in the leaf axils of both species. Papillose rhizoids are not very rare in mosses. However, Oedicladium doii and Palisadula chrysophylla are the only mosses which are known to have papillose rhizoids in addition to papillose protonema and papillose axillary gemmae.
日本蘚苔類学会の論文
1980-04-15