Halidrys siliquosa

Halidrys siliquosa
A fresh piece of Halidrys siliquosa lying in a tray, with some other seaweeds
Scientific classification
Clade: SAR
Phylum: Ochrophyta
Class: Phaeophyceae
Order: Fucales
Family: Sargassaceae
Genus: Halidrys
Species:
H. siliquosa
Binomial name
Halidrys siliquosa

Halidrys siliquosa is a large marine brown algae.

Halidrys siliquosa herbarium sheet. Collected in Heligoland, Germany

Description

Halidrys siliquosa is a large brown alga growing to a length of 120 centimetres (47 in). The fronds are somewhat flattened, tough and leathery. They and less than 1 cm broad. The branches occur alternately arranged in one plane. Air bladders occur and are oblong and pointed. The plants are attached by a discoid holdfast.[1]

Halidrys siliquosa cross-section

Reproduction

The plants are hermaphroditic,[2] bearing bisexual conceptacles appearing as pods on stalks at the end of branches.[1]

Distribution

Generally found around Ireland, Great Britain - including Shetland and the Isle of Man.[1][3]

Habitat

Low level, low littoral, rock pools.[1]

References

  1. Bunker, F.StP., Maggs, C.A., Brodie, J.A. Bunker, A.R. 2017 Seaweeds of Britain and Ireland. Second Edition Wild Nature Press, Plymouth,UK
  2. Newton, L. 1931. A Handbook of the British Seaweeds. British Museum, London
  3. Hardy, F.G. and Guiry, M.D. 2003. A Check-list of the Seaweeds of Britain and Ireland. The British Phycological Society ISBN 0-9527115-16
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