Dictyota cervicornis Kützing, 1859: 11

Coppejans, Eric, Leliaert, Frederik, Verbruggen, Heroen, de Clerck, Olivier, Schils, Tom, de Vriese, Thomas & Marie, Daniel, 2004, The marine green and brown algae of Rodrigues (Mauritius, Indian Ocean), Journal of Natural History 38 (23), pp. 2959-3020 : 3000

* Dictyota cervicornis Kützing, 1859: 11 , pl. 24, figure 2

References: Okamura, 1913: 31–32, pl. 108, figures 1–8 (as D. divaricata Lamouroux ); Cribb, 1954: 22, pl. 3, figure 3 (~ D. pardalis Kützing f. pseudohamata Cribb); Taylor, 1960: 222: pl. 31, figure 2 ; Tsuda, 1972: 95–96, pl. 3, figure 4 , pl. 4, figure 1 ; Jaasund, 1976: 75–76, figures 1C , 2A, H, 3A, B (under D. cervicornis and ~ D. pardalis ); Tseng, 1984: 192, pl. 97, figure 2 ; Coppejans et al., 1995b: 180, figures 9, 10 ; Trono, 1997: 106, figure 73; Littler and Littler, 2000: 260, figure p. 261; De Clerck et al., 2002: 415, figures 2–4 ; De Clerck, 2003: 42–51, figures 11–14 .

Type locality. Vera Cruz , Mexico .

Vouchers. HEC 14621, 18 September 2001, western side of Cotton Bay (s.s. 13) ; HEC 14652, 19 September 2001, Gravier (s.s. 16) ; HEC 14766, 25 September 2001, Passe Grand Bassin (s.s. 2) ; HEC 14858, 30 September 2001, southwestern part of the lagoon (s.s. 27) .

Ecology. Epilithic in the intertidal, more rarely in the shallow subtidal zone.

Distribution. Australia, Eritrea, India, Indonesia, Iran, Kenya, Kuwait, Madagascar, Malaysia, Mauritius ( Jagtap, 1993: table I), Mozambique, Pakistan, Réunion ( Jadin, 1935: 160 ~ Dictyota indica Sonder ex Kützing ), Rodrigues (this paper), Seychelles, Singapore, Somalia, South Africa, Sri Lanka, Tanzania, Thailand, Yemen.

Figures

FIGS 2–6. Chlorophyta. (2) Microdictyon tenuius, detail of branching and anastomosing patterns (HEC 14849). (3) Bryopsis pennata var. pennata, branchlets of last order contiguous and in a single plane (HEC 14796 p.p.). (4) Bryopsis pennata var. leprieurii, branchlets of last order interrupted and in a single plane (HEC 14757).(5) Bryopsis pennata var. secunda, branchlets of last order curved in one direction (HEC 14796 p.p.). (6) Chamaedoris delphinii (HEC 14617). Scale bars: 250 mm (2); 5 mm (3–5); 1 cm (6).

FIG. 1. Sampling stations. See table 1 for a list of the stations and their GPS coordinates. Map redrawn from Wells (1988). The outer grey line represents the fringing reef.

FIGS 7–13. Caulerpa brachypus, variation in the general morphology and margin structure of the assimilators. (7) Large growth form collected in grooves between bumps of coral rubble, frequently branching and with secondary stolons (HEC 14867). (8) Intermediately large growth form with wide assimilators (HEC 14769). (9) Intermediately large growth form with relatively narrow assimilators (HEC 14656a). (10) Typical specimen with simple or scarcely branched assimilators (HEC 14612). (11) Assimilator with smooth margin (HEC 14612). (12) Assimilator with coarsely dentate margin (HEC 14656a). (13) Assimilator with densely dentate margin (HEC 14718). Scale bars: 2 cm (7–10); 1 mm (11–13).