隐丝藻科一新属──管形藻属

A New Genus of Cryptonemiaceae-Sinotubimorpha

中空蜈蚣藻（Grateloupiaporracea（Mert．）W．X．LietZ．F．Ding）在幼苗期（0．2cm）已中空，成体的主枝与分枝亦中空。皮层细胞叉状排列或稍背斜形；生枝枝丛（ampullae）只有一条主枝或1分枝；果胞枝由1～3个细胞组成，有的果胞亦产生由1～4个细胞组成的侧枝。其特征与蜈蚣藻属（GrateloupiaC．Ag）不同。建议将其从蜈蚣藻属中移出另成立一个新属管形藻属SinotubimorphaW．X．LietZ．F．Dinggen，nov．该属模式种为管形藻S，porracea（Mert．）W．X．LietZ．F．Dingcomb．nov，采于青岛1984年。

The results of our study on Grateloupia porracea shows that its thalli are hollow at the stage of plantlets about 0. 2 cm in height,its main axes and branches of the larger thalli are also hollow. The cortex layers are disposed in dichotoms branches and more or less anticlinal row. The primary filament of ampullae none or has 1 secondary filament. The carpogonial branch has 1～3 cells. The flank of some carpogones can bear a flank filament,which is composed of 1～4 cells.Therefore,its characteristics are also different from Grateloupia, so we suggested that Grateloupia porracea should be taken out of Grateloupia and found a new genus Sinotnbimorpha, the type species of the genus Sinotubimorpha is S. porracea (Mert. )W. X. Li et Z. F. Ding comb. nov.,collected from Qingdao in 1984.