Dictyota rigida De Clerck & Coppejans
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Family:  Dictyotaceae ()
Max. size:  6 cm TL (male/unsexed)
Environment:  sessile; marine
Distribution:  Indian Ocean: South Africa and Tanzania.
Diagnosis:  Thalli up to 6 cm high, attached by a small stupose holdfast. Narrow dichotomously branched straps (0.8-1.2 mm) with uniform width throughout the thallus. Smooth margins and surface. Medulla and cortex are uniformly one-layered. Sporangia form a well-defined line in the median part of the straps, but is absent along the margins. Sporangia (80-95 μm in diameter) are borne on a single stalk cell and are not surrounded by an involucrum. Gametangia not observed (Ref. 82093).
Biology:  Characters defining D. rigida include the erect growth form, the stiff texture and the single stupose holdfast (De Clerck and Coppejans 1999) (Ref. 82093). Collected in pools of the sub-littoral fringe (Ref. 82093).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (120744)
Threat to humans: 
Country info:   
 

Entered by: Paglinawan, Luvie - 13.04.09
Modified by: Glorioso, Joann - 16.03.10

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