Cystoseira compressa f. plana (Ercegovic) Cormaci, G. Furnari, Giaccone, Scammacca & D. Serio

Marletta, Giuliana & Lombardo, Andrea, 2023, The Fucales (Ochrophyta, Phaeophyceae) of the Island of Pantelleria (Sicily Channel, Mediterranean Sea): a new contribution, Italian Botanist 15, pp. 137-163 : 137

Cystoseira compressa f. plana (Ercegovic) Cormaci, G. Furnari, Giaccone, Scammacca & D. Serio

Fig. 3A, B

Cystoseira abrotanifolia subsp. plana Ercegovic. Basionym.

Morphology of specimens from Pantelleria.

This form is caespitose with a pyramidal shape, attached to the substrate by a discoid holdfast. The apices are smooth and not very protruding. All branches are flattened and arranged in a single plane with a distichous and pinnate disposal. They are crossed by a slightly protruding midrib, which is bordered by cryptostomata. During the monitoring activities, the thalli of this form were found reproductive. The receptacles are carried on terminal branches and are branched in a single plane.

Habitat.

C. compressa f. plana was observed at Bue Marino and Martingana in shallow (0.2-1 m) and sheltered waters.

Distribution.

This form has been recorded for Sicily, Adriatic Sea, Cyprus, Spain, Greece, Tunisia and Turkey ( Blanfuné et al. 2022).

Figures

Figure 3. Cystoseira compressa f. plana A habit B detail of receptacles.