Tilopteridales

Tilopteridales is an order of brown algae (class Phaeophyceae).

This order contains algae with different types of alternation of generation. For instance, Saccorhiza polyschides has a sporophyte with a kelp-like morphology while the gametophyte is filamentous, Cutleria multifida has a more complex dichotomously branching gametophyte and a crustose sporophyte, Zanardinia typus has an isomorphic alternation of generations, and Tilopteris mertensii only has a diploid phase.