Vroom, P. S., Abbott, I. A.
Acrosymphyton brainardii sp. nov. (Gigartinales, Rhodophyta) from French Frigate Shoals, northwestern Hawaiian Islands
Acrosymphyton brainardii sp. nov. is described from the remote and unpopulated French Frigate Shoals, northwestern Hawaiian Islands. The new species is distinguished from other known species of Acrosymphyton by its extremely long carpogonial and auxiliary-cell branches, uncoiled trichogynes, auxiliary-cell branches organized into dense fascicles, ovoid to ellipsoidal gonimoblasts, and thick outer cortex. Gametophytes are assumed to be spring or summer annuals, because populations disappear during autumn months. Male gametophytes and tetrasporophytes remain unknown.