What is "dictyosiphonales"

'''Dictyosiphonales ''' is an order in the class Phaeophyceae ( brown algae). Members of this order have a sporphytic thallus with true parenchyma formed by both longitudinal as well as a transverse cell division with a thallus that is solid, tubular flat, saccate, branched or foliose.

The Dictyosiphonales includes some common littoral seaweeds, but the members of the order generally have a relatively undifferentiated structure without the conventional construction of a holdfast, stipe and lamina. .

As their general name suggests their pigmentation is brown.