PLATYSIPHONIA DECUMBENS SP. NOV., A NEW MEMBER OF THE SARCOMENIA GROUP (RHODOPHYTA) FROM WASHINGTON.
A new species, Platysiphonia decumbens, belonging to the Sarcomenia group (Rhodophyta, Ceramiales), is described from Puget Sound, Washington. Reproductive thalli are described and illustrated, and the growth of this alga in culture is correlated with observations made on field material. The limits of the genus Platysiphonia Børgesen are broadened to include this species. The relationship of Platysiphonia to Sarcomenia Sonder is discussed.
Department of Botany, University of Washington, Seattle, Washington 98105.
M J
MJ
Wynne