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<正> 运城菱形藻 新种 图版1,图1—10 Nitzschia yunchengensis Xie et Li, sp. nov. Frustula e facie connexionis rectangularis, angulis rotundatis, marginibus in mediomodice concavis, axibus pervalvaribus 9. 3—10. 03μm altis, copulis multis. Valvae lineares,