Cala Domingos, Cales de Mallorca, Spain
Algae with 3 to 6 cm in height. The rhizoids attach to a rock surface and have a diploid nucleus that divides during maturation.
The thallus is slender and grey green. It ends in a funnel-shaped (umbrella-like) grey green top, with radial rays.
During the vegetative growth sterile filaments grow in the stipe but are soon discarded.
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|Acetabularia acetabulum (Linnaeus) P.C.Silva