Avrainvillea obscura (C.Agardh) J.Agardh
Acta Universitatis Lundensis. Lunds Universitets Årsskrift. Afdelningen för Mathematik och Naturvete 53 (1887)
Conservation Code:
Not threatened
Naturalised Status: Native to Western Australia
Name Status:
Current
Scientific Description
John Huisman & Cheryl Parker,
Monday 20 June 2011
Habit and structure. Thallus with a flabellate or irregularly shaped blade borne on a mostly buried holdfast. Emergent portion of thallus to 6 cm in height, grey/green to olive brown (often drying almost black). Holdfast filamentous, extensive, forming a bulbous conglomerate with particles from the substratum. Blade spongy, variously shaped, generally entire but occasionally lacerate, sessile or with a short stipe. Structure of blade polystromatic, with interwoven siphons, these 25–50 µm in diameter, irregularly dichotomously branched, with constrictions at dichotomies. Terminal filaments slightly broader, with rounded apices.
Distribution. Warmer waters of the Indo-Pacific. In
Habitat. Grows in sandy/silty substrata, generally in the intertidal or shallow subtidal.
