Ulotrichales

Ulotrichales is an order of green algae in the class Ulvophyceae. Members of this order are most common in freshwater and marine habitats, although some are terrestrial or aerophytic.

Algae in the Ulotrichales are diverse in morphology, and include coccoid (round single cells), sarcinoid (three-dimensional packet-like), filamentous (thread-like), and blade-like forms. The cells generally contain a single parietal chloroplast with one to several pyrenoids, and one or several nuclei.