J Integr Plant Biol. ›› 1964, Vol. 12 ›› Issue (4): -.

• Research Articles •    

Studies on the Reproductive Organs of Red Algae V. Liagorophila

K. C. Fan and W. S. Li   

Abstract: The type and only known species of the genus Liagorophila (Nemalionales, Acrochaetiaceae) is L. endophytica which was first described by Yamada (1944) from the specimens collected in Taiwan, China, where it grew endophytically in the thalli of Liagora orientalis. The material based in this study was collected at Sha-lao, Qiong-hai Prefecture, Hainan Island. The thallus of this endophytic alga consists of irregularly branched filaments, the cells of which are usually somewhat swollen in the middle. Each cell possesses a stellate chromatophore. Our material is dioecious, female and male organs may occur occasionally on the same individual. The spermatangia arise as clavate protrusions and usually occur in groups of two or three. They are sessile or pedicellate. The carpogonium is flask shaped, situated singly at the lateral side or terminal end of a vegetative cell. The fertilized carpogonium enlarges by a process of protruding, and gives off two or more gonimoblast initials. The first division is longitudinal. The initials grow and divide into a spherical mass of cells many of which become carposporangia ultimately. Monosporangia are ovoid in shape, sessile or stalked, unilaterally sedated. The family Acrochaetiaceae is an extremely difficult group which has not yet received sufficient study. From all currently accepted genera (see Papenfuss 1945, 1947; Kylin 1956), however, Liagorophila can be distinguished by its unique manner of the first division of fertilized carpogonium. A search of literature has been made for comparing L. endophytica with somewhat 90 other endophytic and endozoic species of the same family; it is revealed that L. endophytica approaches very near to Kylinia liagorae (Boer- gesen) Papenfuss and may be identical with this species.

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