Amongst the Phaeophyta (Brown Algae) the taxa with antimicrobial activity include species of Dictyopteris, Zonaria, Ecklonia.    From Wordnik.com.  [Chapter 7] Reference

More than 80 species of green (Chlorophyta), brown (Phaeophyta) and red (Rhodophyta) algae have been identified at Flower Garden Banks National Marine Sanctuary.    From Wordnik.com.  [Flower Garden Banks National Marine Sanctuary] Reference

Foraminiferans Kingdom "uncertain" (Foraminifera) Mainly macroscopic and multicellular • Brown algae Stramenopila (Phaeophyta) • Red algae Rhodophyta Many single celled and macroscopic species • Green algae Chlorophyta Of these eight photosynthetic groups, only the green algae have colonized and become well established in terrestrial environments.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

Hizikia fusiforme (Sargassaceae, Phaeophyta).    From Wordnik.com.  [New Content on CO2 Science] Reference

Phaeophyta.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference