- Rhodophyceae, class Rhodophyceae - coextensive with the Rhodophyta: red algae
--1 is a kind of class
--1 is a member of Rhodophyta, division Rhodophyta
--1 has members:Gigartinaceae, family Gigartinaceae; Rhodymeniaceae, family Rhodymeniaceae; Bangiaceae, family Bangiaceae