Other Algae

If using a system of classification that was acceptable a number of years ago, we might say that we have already considered all the algal groups: the Cyanophyta, the Chlorophyta, the Phaeophyta, and the Rhodophyta. But the classification system employed in this and other recent texts includes additional algal phyla: Xanthophyta, Euglenophyta, Chrysophyta, and Pyrrophyta. These are sometimes not considered in a beginning botany course, but if there is enough time, there is still enchantment to be found in these several groups.