Gloiocladia australis (J.Agardh) R.E.Norris 1991

Current name: Gloioderma australe J.Agardh
Kearn Reef, Jurien Bay, Western AustraliaG.J.Edgar

Publication Details
Gloiocladia australis (J.Agardh) R.E.Norris 1991: 592 (as 'australe')

Published in: Norris, R.E. (1991). Some unusual marine red algae (Rhodophyta) from South Africa. Phycologia 30: 582-596, 25 figs,1 table.

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Type Species
The type species (holotype) of the genus Gloiocladia is Gloiocladia furcata (C.Agardh) J.Agardh.

Status of Name
This name is currently regarded as a synonym of Gloioderma australe J.Agardh.

Basionym
Gloioderma australe J.Agardh

Type Information
Type locality: Western Australia; (Silva & al. 1996: 363)

Origin of Species Name
Adjective (Latin), south, southern (Stearn 1983).

General Environment
This is a marine species.

Description
Thallus medium to dark red to red-brown, fading to grey-red, (10-) 20-40 cm high, soft and mucilaginous, complanately branched with flat, irregularly pinnate branches for 3 or 4 orders, main branches (3) 6-10 mm broad, bearing marginal pinnate branches 3-10 cm long and also simple branchlets 3-10 mm long, with ultimate branchlets 1-2 mm broad; compact, rounded, potentially adhesive, discs 23 mm across, terminate few to numerous branchlets. Holdfast discoid, with adhesions also by the discs of dense, elongate cells; usually epiphytic on sea-grasses or larger algae, or epilithic (?). Structure multiaxial, developing a cortex 50-90 µm thick of slender branched filaments 5-8 cells long, with the lower 2-3 cells irregular, 5-10 µm broad, and the upper 3-5 cells ovoid, 2-3 µm in diameter, arising from the lax inner cortex of ovoid cells 15-25 µm in diameter. Medulla 35 cells thick, cells large, ovoid, 60-200 (250) µm in diameter, with frequent secondary pit-connections. Hairs on outer cortical cells common. Rhodoplasts discoid to elongate in cortical cells, ribbon like in medullary cells.

Habitat
Usually epiphytic on seagrasses (Womersley 1996: 98).

Created: 20 January 1998 by M.D. Guiry.

Last updated: 16 January 2020

Verification of Data
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Nomenclatural note
Norris (1991: 592) and Womersley (1996: 98) cite Gloiocladia australe and Gloioderma australis (basionym). - (18 March 2009) - G.M. Guiry

Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=2907

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 16 January 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 May 2025