黏菌是真核生物中一类特殊的类群，是遗传学、生物学和细胞学理想的实验材料。发网菌科是黏菌中的重要类群，分布广泛。我国共计报道11属，38种，仅占世界报道的18%，相对于世界种数（17属，210种）偏少，大量属种我国从未报道过，该类群新的资源还需继续探索挖掘。目前，发网菌科黏菌属种间的分类界限仍存有较大争议。本项目拟在已开展的前期研究基础上, 继续在全国范围内广泛进行野外调查和标本采集，并结合各大标本室库存标本，进行详尽的形态学观察，描述每种黏菌的形态特征；基于EF-1α、SSUrRNA等基因片段，分析探讨发网菌科黏菌各属、种之间的系统发育关系；对于疑难种进一步根据生活史来讨论其分类地位。通过将形态学、分子系统学和生活史等研究方法相结合，综合研究我国发网菌科黏菌，可望揭示我国该科黏菌物种多样性及物种间的亲缘关系，深入认识我国该科黏菌的资源和分布特点。

Slime moulds are an unique group in eukaryotes which are also a kind of ideal objects suitable for investigating problems in genetics, cytology, and biology. Stemonitaceae is a common and important family which were terrestrial distribution in Myxogastrea. Elenven genura, 38 species of Stemonitaceae have been reproted in China, only 18% reported in the world (17 genura, 210 speices ). Many genura and species have not been reported in China. So new resources of Stemonitaceae will be continued to explore in China. Today there are controversial issues in genera and species classification. Based on a great deal of research about taxonomy of Stemonitaceae in early stage, investigating in the field and collecting specimens nationwide will be continued, and the species deposited in Herbarium will be examined. The morphological descriptions and illustrations are going to be provided. Based on the EF-1ɑand SSUrRNA sequences, the phylogenetic tree of the genera and species of Stemonitaceae will be constructed and their phylogenetic relationships will be analyzed. Some questioned species were identifyed by life cycle of this species. The purpose of this study is identifying questioned genus and exploring new resources of Stemonitaceae, investigating the distribution of this genus in China and solving the problems by the taxonomy, phylogeny and life cycle of this family by combining the traditional taxonomic and molecular phylogeny. On these bases, the more natural taxonomic system of Stemonitaceae will be explored.