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Species: |
Erythroglossum laciniatum |
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Authority: |
(Lightfoot) Maggs & Hommersand |
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Description: |
Crisp, rather rigid, flattened, fan-shaped, dark purplish red fronds, sometimes with blue iridescence underwater, entire to deeply cleft into wedge- or ribbon-shaped segments, to 300 mm long. Stipe to 25 mm long, from discoid base. Venation palmate, with no distinct midrib, veins anstomosing, microscopic veins present in young parts. Polystromatic in older portion, monostromatic distally. Thallus a short stipe, erect, consisting of one or more blades to 16 cms long and 15 or 20 cms wide, fan-shaped and divided into lobes with pointed apices. Veins macroscopic, also fine veins. Proliferations on the margin may curve down and reattach. Very variable. Similar Species: Haralidiophyllum bonnemaisonii does not have microscopic or macroscopic veins. Cryptopleura ramosa has veins only one cell wide just behind the apices and smooth blade margins. |
| Name History |
Adjective (Latin), slashed into narrow divisions with tapering, pointed incisions |
| Biogeography |
Europe: Mediterranean, Portugal, France, British Isles including the Shetland Islands and Channel Isles |
| Habitat: |
Marine species, on rocks and epiphytic, deep lower intertidal pools and subtidal to 30 m where it is a frequent component of the Laminaria hyperborea understorey vegetation |
| Type information: |
Basionym
Ulva laciniata Lightfoot Type information
Type locality: Iona (Silva, Basson & Moe 1996: 92). Type: undated; BM-K Notes: Index Nominum Algarum notes that type informtion is fide Maggs & Hommersand (1993). |
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