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Fucus spiralis
( BOK:Kaurtang,Spiraltang ENG:Spiralled Wrack) 3 photos (see below for more photos)
Specimens growing on large stones on the upper shore during low tide.
Photo by: Vivian Husa
Location: Fyrsundet, Fedje, Hordaland
Photo is showing (categorized): Thallus
Verified by Network members
Sampling date: 2009-07-16
Published: 2010-03-10
The species is tolerant to dry conditions during low tide and grows usually on hard rock in a zone between Fucus vesiculosus and Pelvetia canaliculata. The fronds can be up to 30-40 cm tall and has a prominent midrib but no air-vesicles. The fronds show an irregular dichotomous branching-pattern and are often spirally twisted.
Specimens with receptacles
Photo by: Vivian Husa
Location: Fyrsundet, Fedje, Hordaland
Photo is showing (categorized): Reproductive structure
Verified by Network members
Sampling date: 2009-07-16
Published: 2010-03-10
The species carries rounded receptacles, often in pairs, with a characteristic rim along the egde.
Specimen with immature receptacles
Photo by: Vivian Husa
Location: Solesnes, Hardangerfjorden, Hordaland
Photo is showing (categorized): Reproductive structure
Verified by Network members
Sampling date: 2009-06-09
Published: 2010-03-10
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