Two taxa of Middle Devonian Cladoxylopsida from localities in Belgium and Germany are redescribed. A counterpart of one of the missing type specimens of Hyenia elegans Kräusel et Weyland from Kirberg, Germany, demonstrates that rather than having simple forked fertile appendages (as apparent from the type description), more complex fertile units were present; these consisted of two daughter segments (resulting from a proximal dichotomy), each of which bore three pairs of elongate sporangia on short recurved stalks proximal to a terminal bifurcation. Specimens from Oé, Belgium, informally referred to as Hyenia `complexa' by Leclercq, were shown to have a similar fertile organ that lacked the tuft of filiform extensions previously believed to be present. The parallel axes of this plant are now interpreted to be derived from a digitate branch rather than from a horizontal rhizome. Both taxa, H. elegans and H. `complexa,' therefore demonstrate fertile appendage morphology and other characters that are typical of the Middle Devonian cladoxylopsid Calamophyton primaevum Kräusel et Weyland, which has priority.

中文翻译：

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重新考虑鬣狗 Kräusel et Weyland and Hyenia `complexa'Leclercq：来自西欧的两个中泥盆纪枝木

重新描述了来自比利时和德国地区的中泥盆统枝木纲的两个分类群。来自德国基尔贝格的鬣狗 Kräusel et Weyland 缺失的模式标本之一的对应物表明，它不是具有简单的分叉的可育附属物（从类型描述中可以看出），而是存在更复杂的可育单元。这些由两个子节组成（由近端二分法产生），每个子节在末端分叉近端的短反曲茎上有三对细长的孢子囊。来自比利时 Oé 的标本，被 Leclercq 非正式地称为 Hyenia“complexa”，被证明具有类似的可育器官，该器官缺乏以前认为存在的丝状延伸簇。这种植物的平行轴现在被解释为来自指状分支而不是来自水平根茎。因此，分类群 H. elegans 和 H. `complexa' 都表现出肥沃的附属物形态和其他特征，这些特征是中泥盆世枝状藻类 Calamophyton primaevum Kräusel et Weyland 的典型特征，具有优先权。