Delesseria sanguinea
Species of alga
From Wikipedia, the free encyclopedia
Delesseria sanguinea is a red marine seaweed.
| Delesseria sanguinea | |
|---|---|
| |
Scientific classification  | |
| Domain: | Eukaryota |
| Clade: | Archaeplastida |
| Division: | Rhodophyta |
| Class: | Florideophyceae |
| Order: | Ceramiales |
| Family: | Delesseriaceae |
| Genus: | Delesseria |
| Species: | D. sanguinea |
| Binomial name | |
| Delesseria sanguinea (Hudson) J.V.Lamouroux | |
Description
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]
Reproduction
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]
Habitat
Distribution
Common around Ireland, Great Britain, Isle of Man, Channel Islands, to the north to Norway and Iceland south in Spain.[2]
