Systematics of Aneuraceae (Hepaticae) based on differentiation of thallus

1.从孢子发育的幼期：油体包含在幼期的所有细胞中，来自成体所有细胞中都有油体的物种。另一方面，在成体表皮或边缘细胞中没有油体的物种，在幼早期缺乏油体，只存在于内部细胞中，或幼早期包括所有细胞中的油体，在表皮细胞中逐渐缺乏油体。2.基于油体的菌体分化：菌体的组织分化与油体的分布具有相互依赖性。（1）所有的细胞都含有油体，叶状体动脉瘤、叶枝枝藻和叶枝藻亚属的某些种无差异;瑞卡迪亚（2）油体散在或缺乏--轮枝藻亚属（Riccardia subgen.）瑞卡迪亚（3）叶表皮细胞和边缘细胞缺乏油体-Riccardia subg.透明脉龙（4）油体只在内细胞中存在：叶状体细胞小，部分种的油体细胞较小。瑞卡迪亚（5）翅细胞内部和部分翅细胞内有油体，表皮细胞与翅间有间隙。3.模式标本的重新鉴定：东南亚描述的39种是后来的同形异名，必须归为同形异名。4. Vandiemenia的分类地位：菌体没有油体和中脉结构，建议它属于Metzgeriaceae。5.系统分类：在东南亚分布有Ancura属5种，Lobatiriccardia属2种，Riccardia属45种。其中Ancura属1新种，Lobatiriccardia属1新种，Riccardia属4新种。塔斯马尼亚的一个物种也可以被描述为科学上的新物种。约有10个物种有待进一步调查。

1.Young stages developed from sporeling : Oil bodies are included in all cells of young stage derived from species having oil bodies in all cells in adult. On the other hand, species without oil bodies in epidermal or marginal cells in adult lack oil bodies in early young stages and became present in only inner cells, or early young stage includes oil bodies all cells and become to lack them gradually in epidermal cells.2.Differentiation of thalli based on oil bodies : The thalli have interdependence between tissue differentiation and oil body-distribution. (1)All cells include oil bodies : no defferentiation of thallus-Aneura, Lobatiriccardia and some species of Riccardia subg. Riccardia. (2)Oil bodies scattered or lacking-Riccardia subgen. Riccardia. (3)Ventral epidermal and marginal cells lack oil bodies-Riccardia subg. Hyaloneura. (4)Oil bodies only in inner cells : thallus has small cells-some species of Riccardia subg. Riccardia. (5)Inner and part of wing cells include oil bodies : having gaps between epidermal cells and wing-some species of Riccardia subg. Riccardia.3.Reexamination of type specimens : Thirty-nine species described from Southeast Asia of the family are later homonyms and must be reduced under other earlier correct name as synonyms.4.Taxonomical status of Vandiemenia : Thalli have no oil bodies and midrib structures and they suggest that it belongs to the family Metzgeriaceae.5.Systematics : Five species of Ancura, 2 species of Lobatiriccardia, 45 species of Riccardia are rccognized in Southeast Asia. Among them 1 species of Ancura, 1 species of Lobatiriccardia, 4 species of Riccardia may be described as new to science. One species of Tasmania may be also described as new to science. About ten species arc open to question and further investigations are needed.