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Apoglossum ruscifolium (Turner) J. Agardh

Description: Membranous, tufted, bright red fronds, to 100 mm long. Frond with conspicuous midrib and wavy margin, to 6 mm wide, repeatedly branched from midrib, apices blunt. Numerous microscopic veins, at wide angle from midrib.
Habitat: On rock and epiphytic, lower intertidal and subtidal, widely distributed, occasional.
Notes: Apoglossocolax pusilla Maggs et Hommersand, a minute whitish parasite to 2 mm in diameter, occurs very rarely (Dorset in England; Galway in Ireland; northern Spain) on this species.
Link: Algaebase

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Photographs © M.D. Guiry

Apoglossum ruscifolium
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