Electronic Flora of South Australia Genus Fact Sheet

Genus ECKLONIA Hornemann 1828: 388

Phylum Phaeophyta – Order Laminariales – Family Alariaceae

Thallus 1–7 m high, with a much branched hapteroid holdfast and a single stipe, solid or becoming hollow, bearing a single blade. Growth from a meristem at the transition region, developing laterals which mature basipetally. Blade complate with laterals clustered near the base or throughout the length of the blade, maturing towards the apex which disintegrates with age; surface smooth to longitudinally rugose or dentate, margins entire to dentate. Structure of a central filamentous medulla and cortex of small cells with a surface meristoderm; outer cells densely phaeoplastic.

Reproduction: Reproduction by unilocular sporangia (with paraphyses) in extensive sori on the central axis or the laterals.

Type species: E. buccinalis (Linnaeus) Hornemann [=E. maxima (Osbeck) Papenfuss]. A genus of about 6 species, with E. radiata in southern Australia.

Taxonomic notes: Gametophytes dioecious, filamentous, oogamous.

References:

HORNEMANN, J.W. (1828). Om Fucus buccinalis Lin. Kgl. Danske Vidensk. Selsk. AfhandI 3, 379–390, Plate 3.

The Marine Benthic Flora of Southern Australia Part II complete list of references.

Author: H.B.S. Womersley

Publication: Womersley, H.B.S. (14 December, 1987)
The Marine Benthic Flora of Southern Australia
Part II
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