The present paper deals with the structure of the thalli and development of the reproductive systems of four species of Liagora,namely,L. pinnata Harv. and L. setchellii Yamada,both from Xisha Qundao,and L.boergesenii Yamada and L.decus- sata Mont.

• 本文对采集于我国西沙群岛的羽枝粉枝藻(Liagora pinnata Harvey)；鼓苞粉枝藻(L.；setchellii Yamada)；和采集于台湾省的密孢粉枝藻(L