| Dumontia contorta | |
|---|---|
 | |
Scientific classification  | |
| (unranked): | Archaeplastida |
| Division: | Rhodophyta |
| Class: | Florideophyceae |
| Order: | Gigartinales |
| Family: | Dumontiaceae |
| Genus: | Dumontia |
| Species: | D. contorta |
| Binomial name | |
| Dumontia contorta | |
Dumontia contorta is a relatively small epiphytic algae of the sea-shore.
The thallus grows from a discoid holdfast to a length of about 23 centimetres (9.1 in). The fronds branch irregularly and sparingly. [2] The branches are hollow, soft and twisted, dark reddish brown in colour which bleach towards the tips, they clearly taper at their junction. [1]
The plants are dioecious (sexes separate) with microscopic spermatangia, carposporangia, and tetrasporangia developing in the surface layer, cruciate. [1] [3]
Generally epilithic in rock pools of the littoral zone. [1]
Common around the British Isles. Europe from Russia to Portugal and Canada to United States. In the NW Pacific and Alaska. [1] [4]
Palmaria palmata, also called dulse, dillisk or dilsk, red dulse, sea lettuce flakes, or creathnach, is a red alga (Rhodophyta) previously referred to as Rhodymenia palmata. It grows on the northern coasts of the Atlantic and Pacific Oceans. It is a well-known snack food. In Iceland, where it is known as söl[ˈsœːl], it has been an important source of dietary fiber throughout the centuries.
Ceramium is a genus of Ceramium algae. It is a large genus with at least 15 species in the British Isles.
Osmundea pinnatifida is a species of red alga known by the common name pepper dulse.
Dilsea carnosa, commonly known as the poor man's weather glass or the sea belt, is a species of red algae in the Dumontiaceae family of the order Gigartinales.
Polysiphonia lanosa is a common species of the red algae (Rhodophyta) often to be found growing on Ascophyllum nodosum.
Polysiphonia elongata is a small red marine algae in the Rhodophyta.
Polysiphoides fucoides (Hudson) Greville is a common marine alga in the Division Rhodophyta.
Polysiphonia stricta is a small red marine alga in the Division Rhodophyta.
Vertebrata fruticulosa(Boergeseniella fruticulosa Kylin) is a small marine alga in the Division Rhodophyta.
Ceramium botryocarpum is a small red marine alga in the Division Rhodophyta.
Ceramium secundatum is a small marine red alga.
Ceramium shuttleworthianum is a small marine red alga.
Ceramium virgatum, or the red hornweed, is a small red marine alga.
Brongniartella byssoides Schmitz is a small red marine alga.
Plocamium cartilagineum is a medium-sized red marine alga.
Apoglossum ruscifolium is a small red marine seaweed.
Phyllophora crispa is a medium-sized marine red alga.
Gymnogongrus griffithsiae is a small uncommon seaweed.
Gastroclonium reflexum is a small red marine seaweed.
Phymatolithon lenormandii is a common red alga.