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''Chara braunii'' is one of only several ecorticated species of the genus ''Chara'' occurring in Europe and the only species without cortication known from Poland.〔Jacek Urbaniak, "Distribution of ''Chara braunii'' Gmellin 1826 (''Charophyta'') in Poland", ((link ), retrieved November 30, 2015), ''Acta Societatis Botanicorum Polonae'', vol. 76, no. 4, pp. 313-320, 2007〕 The findings of ''C. braunii'' in southern Poland only in fish ponds may have suggested that this species is restricted only to this type of ecosystem, but this is not true. ==Description== The plant is small to medium size. Fresh green to brownish green when found in the muddy bottom. Transparent and richly branched. Plants are entirely ecorticate (i.e., without cortex). The main axis slender up to 1200 µm in diameter. The stipulodes (single cell organs present in one or more rows in the branchlets of Chara) occur in a single whorl and are well developed. Branchelets 6-10 in a whorl, straight and occasionally incurved; segments 4-6, the last one often reduced, with 1 or more small end cells forming tiny terminal corona. Bracteoles (leaf-like structures) slightly longer than the oospore. The species is monoecious and richly fertile oogonia are situated above the antheridia. The oospore is dark brown or black.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chara braunii」の詳細全文を読む スポンサード リンク
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