Algae · Brown algae · Marine Life

Dead-man’s finger (Splachnidium rugosum)

Wrinkling dead-man’s fingers in a rock crevice. Hondeklipbaai, Northern Cape (2020) – iNaturalist

Swollen yellow-brown, finger-like bladders, filled with thick, clear slimy mucilage, turgid when wet and becoming withered and wrinkled when dry. The main stipe is swollen with many similarly shaped side branches which are constricted at their point of origin and rounded at the tips. The holdfast is a small disc from which several stipes may arise. The texture is turgid and firm becoming leathery with age.

Up to 20 cm high, usually shorter.

Occurs on rocks exposed at low tide, where its mucus protects it against desiccation.

Two Oceans: A Guide to the Marine Life of Southern Africa (1994, 2016)

Coming soon …

Details of the swollen finger-like bladders. Doringbaai, Western Cape (2020) – iNaturalist
Insertion of the dead-man’s fingers bladders on its round, smaller holdfast. Yzerfontein, Western Cape (2020) – iNaturalist
Wrinkling dead-man’s fingers, drying up higher on the shore. Cape Agulhas, Western Cape (2020) – iNaturalist

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