Size / Weight / Age
Max length : 6.5 cm TL male/unsexed; (Ref. 82093)
Sessile; brackish; depth range 0 - 14 m (Ref. 83908)
Climate / Range
Atlantic Ocean: from North Carolina, USA south to Brazil including the Gulf of Mexico, Caribbean and Bermuda, east to Salvage (Selvagens) Islands and south to Angola, including the Mediterranean (Israel), Canary, Cape Verde and Ascension Island; Indian Ocean: In the Arabian Sea south to South Africa, including the Persian Gulf, Seychelles, Madagascar and RÃ©union, east to India and south to Western Australia including Bay of Bengal and Andaman Sea; Pacific Ocean: from Korea to the South China Sea south to Queensland, Australia, east to Hawaiian Islands including Federated States of Micronesia, Fiji and Samoan Archipelago.
Countries | FAO areas | Ecosystems | Occurrences | Introductions
Thalli, attached by a small stupose rhizoidal base, are to 6.5 cm high, flabellate and composed of several lobes with inrolled margins. The superior surface (the side toward which the margin is inrolled) is slightly to moderately calcified. Thalli are olive-brown in colour. In transverse section the thallus is composed of 4-6 layers of cells in the mid-regions and up to 8-9 layers near the base. Hair rows are present on both sides of the thallus, but more conspicuous on the inferior side of the thallus. Tetrasporangia are arranged in concentric lines, above each hair row, mainly (but not exclusively) developed on the superior surface. An evanescent indusium is present but is usually only clearly visible in very young sori. Tetrasporangia are ovoid, up to 100 Î¼m long and 70 Î¼m wide. Gametophytes were not observed (Ref. 82093).
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Estimation of some characteristics with mathematical models