Domain Eukaryota Class Florideophyceae Family Rhodomelaceae | Division Rhodophyta Order Ceramiales Genus Polysiphonia | |
Similar Polysiphonia fucoides, Brongniartella, Polysiphonia morrowii, Polysiphonia, Polysiphonia lanosa | ||
Polysiphonia brodiei (Dillwyn) Sprengel, now generally spelled "brodiaei", as it is named after Janmes Brodie is a species of red algae in the Rhodophyta. It grows in tufts up to 36 cm long.
Contents
Description
Polysiphonia brodiaei is a dark brownish purple algae which consists of a branched series of axial cells surrounded by 6 - 8 periaxial cells all of the same length. These branches become corticated near the base. Trichoblasts form near the tip and branches develop from their axils. It grows to 36 cm long in dense tufts.
Reproduction
The plants are dioecious, Spermatangial branchlets are borne near the tips of the branches. Cystocarps with a wide ostiole develop and Tetrasporangia appear as a spiral in the branches.
Habitat
Common in the intertidal zone.
Distribution
In Europe the species is found From Norway to Portugal, in the Mediterranean, the Atlantic coast of Canada and also on the Pacific coast of North America and in Australia and New Zealand.