Ganonema farinosum and Ganonema dendroideum comb. nov. (Liagoraceae, Rhodophyta) from Puerto Rico, Caribbean Sea

A detailed morphological account of Ganonema farinosum (J.V.Lamouroux) K.C.Fan et Yung C.Wang is presented. Calcification in this non-lubricous species consists of a cylinder surrounding the medulla and encompassing the inner cortical filaments. Carpogonial branches are unambiguously accessory being produced laterally from a median position on supporting cells. Specimens of Liagora dendroidea (P. et H.Crouan in Mazé et Schramm) I.A.Abbott were also examined and these conformed to Ganonema. Transfer to that genus is made.