Krausserntang

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Krausserntang
Corn kelp (Mastocarpus stellatus), illustration

Corn kelp ( Mastocarpus stellatus ), illustration

Systematics
Subdivision : Rhodophytina
Class : Florideophyceae
Order : Gigartinales
Family : Phyllophoraceae
Genre : Mastocarpus
Type : Krausserntang
Scientific name
Mastocarpus stellatus
( Stackh. ) Guiry

The Kraussternang or needlewrack ( Mastocarpus stellatus ) is a common type of red algae in many European coastal areas .

features

Often growing in dense clumps , the kernel kelp has a cartilaginous substance, is brown-red to purple in color and is up to 20 centimeters high. The alga is attached to the substrate by means of a basal disk . The narrow, flat stem widens into ribbon-shaped, repeatedly dichotomously branched leaf-like fronds. The bands are rolled up like tubes and thickened at the edge, the angles of their branches are acute. The upper part of the frond of female plants is covered on its surface as well as on the edge with papillae up to 10 or more millimeters long . The seldom occurring male plants lack papillae. The tetrasporophyte is a purple-black crust.

distribution

The Kraussternang is found in the Eastern Atlantic from Iceland via Scandinavia, the British Isles and Spain via North and West Africa and the Canary Islands, but also on the Southern Orkney Islands . In the western Atlantic, it has been found on the coast of North America from Nova Scotia to Maine and New Hampshire to North Carolina , but also on the tropical or subtropical coasts of the western Atlantic. In the Mediterranean he is known from Italy, Greece and Turkey. Only one find from Japan is known from the Pacific region.

Systematics

The tetrasporophyte was wrongly described as a separate species, Petrocelis cruenta , but is now just as much a botanical synonym as the long-used Gigartina stellata , Fucus stellatus or Gigartina mammillosa .

proof

  1. ↑ a b c Guiry, MD & Guiry, GM: Mastocarpus stellatus In: AlgaeBase. , World-wide electronic publication, National University of Ireland, Galway, accessed February 21, 2012

Web links

Commons : Kraussterntang ( Mastocarpus stellatus )  - Album with pictures, videos and audio files