The marine green and brown algae of Rodrigues (Mauritius, Indian Ocean) Author Coppejans, Eric Author Leliaert, Frederik Author Verbruggen, Heroen Author de Clerck, Olivier Author Schils, Tom Author de Vriese, Thomas Author Marie, Daniel text Journal of Natural History 2004 2004-12-01 38 23 2959 3020 http://dx.doi.org/10.1080/00222930410001695024 journal article 10.1080/00222930410001695024 1464-5262 5251841 * Ulva pertusa Kjellman, 1897: 4–7 , pl. 1, pl. 3, figures 1–8 References: Jaasund, 1976: 3 ; Tseng, 1984: 258 , pl. 128, figure 2 . Syntype localities. Various in Japan . Vouchers. HEC 14677 (zF), 20 September 2001 , Rivière Banane (s.s. 12) ; HEC 14883, 3 October 2001 , western part of Cotton Bay (s.s. 13). Ecology. Epilithic in the intertidal (HEC 14667) and on coral debris on sand about mean low tide (HEC 14883). Distribution. Indonesia (Sumba), Kenya , Mauritius ( Jagtap, 1993 : table I), Rodrigues (this paper), Singapore , Tanzania , Yemen . Note. Typical for this species are the irregularly placed small perforations of different sizes. Other species with perforations are U. reticulata Forsskål (more or less strap-shaped with numerous large perforations of mixed diameter, up to the blade margin), U. pulchra Jaasund with perforations limited to the central part of the orbicular blade, becoming gradually smaller towards the margin of the perforated part) and U. fenestrata Postels and Ruprecht , described from Siberia but mentioned from the Indian Ocean by Durairatnam (1961: 17 , pl. 1, figure 2 , pl. 21, figure 1 ). The latter species is irregularly perforated and the perforations are crenulate.