Avrainvillea erecta (Berk.) A.Gepp & E.Gepp
Siboga-Exped.Monogr. 62:29 (1911)

Conservation Code: Not threatened
Naturalised Status: Native to Western Australia
Name Status: Current

Distribution

Beard’s Provinces: Eremaean Province, Northern Province.

IBRA Regions: Dampierland, Pilbara.

IBRA Subregions: Pindanland, Roebourne.

IMCRA Regions: Kimberley, Pilbara (nearshore), Pilbara (offshore).

Local Government Areas (LGAs): Ashburton, Broome, Karratha, Wyndham-East Kimberley.

Scientific Description
John Huisman and Cheryl Parker, Thursday 8 September 2016

Habit and structure. Thallus erect, olive to dark green, occasionallly with orange margins, to 4 cm tall, mostly solitary, growing in unconsolidated substrata, attached by a submerged bulbous rhizomatous holdfast. Stipes terete, 2–3 mm long and 1–2 mm diam. Blades reniform, flattened, spongy, to 20 mm tall and 30 mm wide. Structure of blade multistratose, with interwoven cylindrical siphons 25–65 µm diam., these irregularly dichotomously branched, with frequent constrictions. Siphon apices cylindrical. Plastids subspherical to ellipsoidal, 4–5 µm long, each with a pyrenoid.

Distribution. Widespread in the Indian and western Pacific Oceans.

Habitat. Typically growing in sandy or muddy substrata in the intertidal.

[After Huisman, Algae of Australia: Mar. Benthic Algae of North-western Australia, 1. Green and Brown Algae 120-121 (2015)]