| Plocamium cartilagineum | |
|---|---|
 | |
| Plocamium cartilagineum herbarium sheet | |
Scientific classification  | |
| (unranked): | Archaeplastida |
| Division: | Rhodophyta |
| Class: | Florideophyceae |
| Order: | Plocamiales |
| Family: | Plocamiaceae |
| Genus: | Plocamium |
| Species: | P. cartilagineum |
| Binomial name | |
| Plocamium cartilagineum (Linnaeus) P.S.Dixon | |
Plocamium cartilagineum is a medium-sized red marine alga.
Plocamium cartilagineum is an erect red alga growing to 10 cm in length. The main axes is flattened with regular flattened branches on both sides. The branches are long and short alternately, the short ones on one side are opposite the longer on the other side. These longer branches bear two or three short curved branches in series, comb-like. The plants are fully corticated. This branching pattern is similar to Plocamium lyngyanum and Plocamium maggsiae the other European species which have only recently been distinguished. [1] [2]
Common on rock in the lower littoral and deeper to 30. [1] [3]
The plants are dioecious. The male structures are microscopic. The female cystocarps grow to 1 mm in diameter and are on the margins of the frond. The spermatangia are within the youngest branches in sori. The tetrasporangia are microscopic. [1]
Common all around the British Isles including Shetland and Channel Islands. [3] Faeroes and Norway to Senegal, Mediterranean and Canary Isles. [4]
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 denudata is a small red alga, Rhodophyta, growing as tufts up to 20 cm long without a main branch axis.
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.
Ceramium virgatum, or the red hornweed, is a small red marine alga.
Brongniartella byssoides Schmitz is a small red marine alga.
Halidrys siliquosa is a large marine brown algae.
Membranoptera alata a small red alga in the Rhodophyta.
Apoglossum ruscifolium is a small red marine seaweed.
Hypoglossum hypoglossoides, known as under tongue weed, is a small red marine alga in the family Delesseriaceae.
Delesseria sanguinea is a red marine seaweed.
Phycodrys rubens is a red marine alga of up to 30 cm long.
Phyllophora crispa is a medium-sized marine red alga.
Phyllophora pseudoceranoides, the stalked leaf bearer, is a small marine red alga.
Phyllophora sicula, the hand leaf bearer, is a small red marine alga.
Odonthalia dentata is a medium sized marine red alga.
Gastroclonium reflexum is a small red marine seaweed.
Phymatolithon lenormandii is a common red alga.