Onslowiaceae is the only
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
in
order Onslowiales in the
brown algae
Brown algae (singular: alga), comprising the class Phaeophyceae, are a large group of multicellular algae, including many seaweeds located in colder waters within the Northern Hemisphere. Brown algae are the major seaweeds of the temperate and p ...
(class Phaeophyceae).
The family contains only the genera ''
Onslowia'' and ''
Verosphacela''.
References
Brown algae families
Brown algae
{{Phaeophyceae-stub