Pelvetia

Rinnentang ( Pelvetia canaliculata )

The Rinnentang ( Pelvetia canaliculata ) is a perennial and very slow-growing kelp from the Department of the brown algae. It is common in the Northeast Atlantic.

Description

The Rinnentang is anchored with an adhesive disc on the ground. He has a tufted, firm - fleshy thallus of eight to fifteen centimeters in length, the multiple branches dichotomously. The fork branches are ribbon-like narrow, its width is only three to five millimeters. The edges are folded slightly, so that at the bottom of a groove is formed in which keeps the moisture at low tide. The thallus has neither a midrib still swim bladders or Haargrübchen. The color of Tang is yellow-brown to olive brown, drying often darkens.

At the Thallusenden arise the reproductive stage numerous narrow -oblong, warty seminal receptacles with a length of 1 to 3 cm, which can sometimes be divided dichotomously. As a representative of the Fucales Rinnentang is a diploid generation without change.

Ecology

The Rinnentang is usually infected with a fungus that probably supports the Tang going to survive in the upper intertidal zone.

Occurrence

The Rinnentang is widespread in the eastern North Atlantic from Norway and Iceland to Portugal. Although it occurs also in the North Sea and Baltic Sea, it has not been found at Helgoland.

It forms large stocks of rocks in the upper intertidal zone, often also exposed to the surf spots. He can travel up into the splash zone.

System

The first description of Rinnentangs was made in 1767 by Carl Linnaeus, under the name Fucus canaliculatus ( In: Systema naturae, Volume 2, page 716). Joseph and Gustave Adolphe Thuret Decaisne set the style 1845 in the genus Pelvetia ( in: Annales des Sciences Naturelles, Botanique, Troisième série 3: p 13).

Synonyms for Pelvetia canaliculata (L.) Decaisne & Thuret are Ascophylla canaliculata (L.) Kuntze, Ascophyllum canaliculatum (L.) Kuntze, Fucodium canaliculatum (L.) J.Agardh, Fucus canaliculatus L., Fucus excisus L. and Halidrys canaliculata (L.) Stackhouse.

Swell

• Wolfram Braune: seaweed. A color guide to the benthic green - brown and red algae of the oceans. Ruggell: Gantner, 2008, ISBN 978-3-906166-69-8, pp. 238-239. (Sections description, occurrence)