Chromista→ Alariaceae
Ecklonia radiata (C.Agardh) J.Agardh
Species genera et ordines algarum 146 (1848)
Conservation Status:
Not threatened
Name Status:
Current
Brief Description
Amanda Spooner,
Friday 3 February 2006
Brown marine subtidal alga, epilithic, upright, to 2 m tall; holdfast hapteroid; stipe single, terete; blade complanate, irregularly distichously branched, leathery, with smooth, corrugate, or spinous surface. Distribution: SW: GS, JF, SWA, WAR.
Scientific Description
John Huisman,
Wednesday 10 June 2009
Thallus: (Sporophyte) Epilithic, upright, brown to light brown, to 2 m in height, with a coarse hapteroid holdfast and single, terete stipe bearing a complanate, irregularly distichously branched blade. Surface of blade smooth or corrugate, often covered with short surface spines.
Structure: With a filamentous medulla and parenchymatous cortex.
Reproduction: Sporangia borne in inconspicuous surface patches, mixed with sterile cells (paraphyses). Gametophyte phase microscopic, filamentous, the female sparsely branched with terminal eggs, the male much-branched with lateral antheridia. Life history biphasic with heteromorphic gametophyte and sporophyte.
