Dasya villosa Harvey, 1844: 433

de Clerck, Olivier, Coppejans, Eric, Schils, Tom, Verbruggen, Heroen, Leliaert, Frederik, de Vriese, Thomas & Marie, Daniel, 2004, The marine red algae of Rodrigues (Mauritius, Indian Ocean), Journal of Natural History 38 (23), pp. 3021-3057 : 3041

* Dasya villosa Harvey, 1844: 433

References: Parsons, 1975: 569, figures 2–4 , 39B; Parsons and Womersley, 1998: 425, 427–430, figure 194; Huisman, 2000: 180.

Type locality. Georgetown , Tasmania .

Voucher. HEC 14712 (zF), 20 September 2001, Totor (s.s. 9) .

Ecology. Only observed at a single site, but locally abundant on coral fragments on the sandy-silty reef slope, between 10 and 13 m depth.

Indian Ocean distribution. Madagascar, Mauritius ( Jadin, 1935: 169; Børgesen, 1945: 28–29, as D. pedicellata (C. Agardh) C. Agardh ), Rodrigues (this paper).

Note. Some specimens bear male stichidia in the upper part of the thallus and tetrasporic stichidia in the lower part. Cystocarpic plants were not observed.

Dictyurus Bory de Saint-Vincent

* Dictyurus purpurascens Bory de Saint-Vincent, 1834: 170–171 , pl. 15, figure 2 Reference: Jaasund, 1976: 121, figure 247.

Type locality. Cape Comorin , Tamil Nuda, India .

Vouchers. HEC 14607 (zF), 18 September 2001, western side of Cotton Bay (s.s. 13) ; HEC 14758 (zF), 24 September 2001, Grand Baie (s.s. 10) .

Ecology. Vertical walls of coral heads close to spring low water level as well as epilithic on the reef slope at 20 m depth.

Indian Ocean distribution. Aldabra Islands, Amirante Islands, Cargados Carajos, Diego Garcia Atoll, India, Kenya, Laccadives, Maldives, Mauritius

( Børgesen, 1945: 30), Nicobar Islands, Réunion ( Payri, 1985: 640), Rodrigues (this paper), Saya de Malha Bank, Seychelles, Sri Lanka, Tanzania.

Note. HEC 14758 is fertile, bearing stichidia of tetrasporangia.

Figures

FIGS 1–7. Rhodophytes. (1) Gracilaria corticata (HEC 14627). (2) Renouxia antillana (HEC 14804). (3) Platoma cyclocolpa (HEC 14805). (4) Titanophora pikeana (HEC 14875). (5, 6) Cryptonemia crenulata (HEC 14876): (5) general morphology; (6) serrate margin. (7) Cryptonemia crenulata (HEC 15134b): cross-section showing cortex and medulla with densely stained ganglionic cells. Scale bars: 1 cm (1, 3, 4); 2 cm (2, 5); 5 mm (6); 50 Mm (7).