Species:
Fucus spiralis L.
Kaurtang, Spiraltang in Norwegian Bokmål
Spiralled Wrack in English
Classification
The species Fucus spiralis belongs to:
Photos
Photos of Fucus spiralis (4):
1 of 4: Specimens growing on large stones on the upper shore during low tide.
Note: 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.
2 of 4: Habit of a small forn
3 of 4: Specimens with receptacles
Note: The species carries rounded receptacles, often in pairs, with a characteristic rim along the egde.
4 of 4: Specimen with immature receptacles
Closest relatives
Other species in the same genus (Fucus):
- Fucus ceranoides L. (3)
- Høvringstang in Norwegian Bokmål
- Horned wrack in English
- Fucus cottonii Wynne & Magne (2)
- Fucus distichus L. (1)
- Båetang in Norwegian Bokmål
- Two headed wrack in English
- Fucus distichus subsp. evanescens (C. Agardh) H. T. Powell (4)
- Gjelvtang in Norwegian Bokmål
- Fucus serratus L. (5)
- Sagtang in Norwegian
- Serrated Wrack in English
- Fucus vesiculosus L. (3)
- Blæretang in Norwegian Bokmål
- Bladder Wrack in English
