Enteromorpha intestinalis (Linnaeus) Nees, 1820

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 : 2965

Enteromorpha intestinalis (Linnaeus) Nees, 1820 : index

References: Bliding, 1963: 139–141, figures 87, 88; Tseng, 1984: 254, pl. 126, figure 3 ; Littler and Littler, 2000: 302, figure p. 303.

Type locality. ‘In Mari omni’.

Vouchers. HEC 14641 (zF), 19 September 2001, Gravier ; HEC 14839, 27 September 2001, Port Sud-Est (s.s. 17).

Ecology. Locally common on sand-covered rocky substratum in the upper intertidal zone ( HEC 14641); on dead shells and coral debris on silty sand along the beach in the lower part of the intertidal zone; exposed at low tide ( HEC 14839).

Distribution. Andaman Islands, Australia, Bahrain, Bangladesh, India, Indonesia (Java), Yemen, Kuwait, Laccadives, Malaysia, Pakistan, Rodrigues ( Dickie, 1877a: 7), Seychelles, Singapore, South Africa, Sri Lanka.

Note. Our material agrees very well with the description and illustrations of Bliding (1963). Our specimens are relatively narrow (maximum 2 mm wide), but

do show marked constrictions.

General remarks on the distribution of Enteromorpha in the Mascarene Islands

Seven Enteromorpha species have been recorded from Mauritius: E. clathrata , E. compressa (Linnaeus) Nees , E. flexuosa , E. prolifera (O. F. Müller) J. Agardh (~ E. compressa (Linnaeus) Nees var. prolifera (O. F. Müller) Greville ) ( Børgesen, 1940: 8–10), E. muscoides (~ E. ramulosa (J. E. Smith) Carmichael) ( Børgesen, 1946: 8), E. kylinii Bliding , E. linza (Linnaeus) J. Agardh ( Jagtap, 1993: table I). Two species, E. muscoides (~ E. crinita Nees ) and E. prolifera , were also recorded from Réunion, by Jadin (1935: 154) and Montagne and Millardet (1862: 4), respectively. E. muscoides (~ E. ramulosa ) and E. compressa have previously been reported from Rodrigues by Dickie (1877a) but were not found in our collections.

Unchecked data from literature

Enteromorpha compressa (Linnaeus) Nees, 1820 : index

Mentioned by Dickie (1877a) but not among our recent collection.

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).