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: ''Not to be confused with Draparnaudia, the genus of gastropod.'' ''Draparnaldia'' is a genus of green algae, in the family Chaetophoraceae.〔 Draparnaldia are uniseriate; each filament is composed of a chain of cells arranged in one row. Chloroplasts appear as a band within the center of each cell. The length of the main axis cells are generally the same, regardless of whether or not they bear branches. These side branches are divided extensively into terminal hairs. The entire plant is enveloped in loose, slippery mucilage. ==Morphology== Draparnaldia attaches to the substrate with rhizoids and is composed of erect, branching filaments surrounded by soft mucilage. Branches born in alternating, opposite, or whorls of tufts from the main axis. Chloroplasts tend to be parietal bands (i.e. "barrel shaped"). Tips of branches usually bearing long, tapering hairs.〔The Freshwater Algal Flora of the British Isles: An Identification Guide to Freshwater and Terrestrial Algae. 2002. Eds. John D.M., B.A. Whitton, & A.J. Brook. Cambridge University Press: United Kingdom.〕 The morphology is highly variable 〔 being dependent upon several environmental conditions.〔〔Whitton, B.A. 1988. "Hairs in Eukaryotic Algae" ''in'': Algae and the aquatic environment. Ed: Round, F.E. Titus Wilson & Son Ltd.: Kendal, England.〕 The hairs develop through the elongation of the apical cell on the branch tips; as they elongate, the chloroplast is lost. Hair development is affected by the levels of phosphorus, nitrogen, carbon dioxide, and light. Although hair production can be suppressed under lab conditions, they are always present in the field.〔 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「Draparnaldia」の詳細全文を読む スポンサード リンク
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