| Delesseria sanguinea | |
|---|---|
 | |
Scientific classification  | |
| (unranked): | Archaeplastida |
| Division: | Rhodophyta |
| Class: | Florideophyceae |
| Order: | Ceramiales |
| Family: | Delesseriaceae |
| Genus: | Delesseria |
| Species: | D. sanguinea |
| Binomial name | |
| Delesseria sanguinea (Hudson) J.V.Lamouroux | |
Delesseria sanguinea is a red marine seaweed.
Delesseria sanguinea is a common and bright red perennial alga with flat leaf-like red blades rising from a discoid holdfast. The blades are monostromatic, that is composed of a layers of single cells, and can grow to 25 cm long. Each blade rises from a cylindrical stipe, the stalk-like part, which branches only at near the base. Each blade may 8 cm wide and show a clear midrib with lateral veins. The tips of the blades are rounded. [1] [2] Other similar algae include: Apoglossum ruscifolium , Hypoglossum hypoglossoides and Membranoptera alata all of which are much smaller. [2] Phycodrys rubens is of comparable size but can be easily distinguished having lobed edges to the blades. [2]
All reproductive bladelets are formed on the midrib. [1] Male reproduction bladelets and reach 6 mm long. Spermatangial sori develop on both sides of the midrib on the blade are form a continuous sorus on the blade, oval in shape. Female bladelets have a narrow lamina and cystocarp forms near the apex on a short stalk. Tetrasporangial bladelets are oval in shape and up to 4 mm in size. [1]
Growing on rock in pools at low water and also sublittoral to 30 m deep epiphytic on other large algae. [1] [2]
Common around Ireland, Great Britain, Isle of Man, Channel Islands, to the north to Norway and Iceland south in Spain. [2]
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, 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.
Chorda filum, commonly known as dead man's rope or sea lace among other names, is a species of brown algae in the genus Chorda. It is widespread in the temperate waters of the northern hemisphere. The species has numerous other common names related to its physical appearance. These include mermaid's tresses, cat's gut or sea-catgut, bootlace weed, sea-twine, and mermaid's fishing line.
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.
Polysiphonia fibrata is a species of Polysiphonia that grows as small dense tufted and finely branched marine alga in the Rhodophyta.
Porphyra purpurea is a medium-sized marine algae in the division Rhodophyta.
Melanothamnus harveyi, Harvey's siphon weed, is a small marine red alga in the division of Rhodophyta.
Polysiphonia stricta is a small red marine alga in the Division Rhodophyta.
Ceramium shuttleworthianum is a small marine red alga.
Membranoptera alata is 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.
Phycodrys rubens is a red marine alga of up to 30 cm long.
Phyllophora crispa is a medium-sized fleshy, marine red alga. This alga forms dense mats of up to 15 cm thickness, which influence environmental factors, thus creating habitat for several associated organisms.
Phyllophora pseudoceranoides, the stalked leaf bearer, is a small marine red alga.
Odonthalia dentata is a medium-sized marine red alga.
Prasiola furfuracea is a small green alga that grows terrestrially.
Codium bursa is a green marine algae of medium size.
Gymnogongrus griffithsiae is a small uncommon seaweed.
