The structure and reproduction ofDudresnaya lubricasp. nov. (Rhodophyta, Dumontiaceae)

Abstract

Dudresnaya lubrica sp. nov. is described from Oahu Island and constitutes the second species of the genus reported from the Hawaiian Islands. D. lubrica differs from other species of the genus by its vegetative and reproductive morphology. The internal and external structure of the male and female vegetative thalli, spermatangial, carpogonial and auxiliary-cell branches and the corresponding post-fertilisation stages of the carposporophyte are discussed and compared with those of other species of Dudresnaya.