Delesseria sanguinea
| Delesseria sanguinea | |
|---|---|
| |
Scientific classification 
| |
| Clade: | 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.
Description
[edit]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
[edit]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
[edit]Growing on rock in pools at low water and also sublittoral to 30 m deep epiphytic on other large algae.[1][2]
Distribution
[edit]Common around Ireland, Great Britain, Isle of Man, Channel Islands, to the north to Norway and Iceland south in Spain.[2]
References
[edit]- ^ a b c d Maggs, C.A. and Hommersand, M.H.1993. Seaweeds of the British Isles Volume 1 Rhodphyta Part 3A Ceramiales. HMSO ISBN 0-11-310045-0
- ^ a b c d e Bunker,F.St.D., Brodie, J.A., Maggs, C.M. and Bunker, A.R. 2017. Seaweeds of Britain and Ireland Second edition. Wild Nature Press, Plymouth, UK ISBN 978-0-9955673-3-7
Further reading
[edit]
- Dickinson, C.I. 1963 British Seaweeds. The Kew Series. Eyre & Spottiswoods
- Morton, O. 1994. Marine Algae of Northern Ireland. Ulster Museum.ISBN 0-900761-28-8
- Morton, O. 2003. The marine macroalgae of County Donegal, Ireland. Bulletin of Irish biogeographical Society No 27.