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 Hydroclathrus Bory de Saint-Vincent Key to the species from Rodrigues 1 Thallus rather stiff, forming a three-dimensional, perforated, hollow structure, the tissue straps 600–900 mm thick (according to Tseng, 1984: 186 )... H. clathratus – Thallus very supple, forming very long reticulate straps with narrow tissue bridges around the perforations; tissue straps 250–300 mm thick (according to Tseng, 1984: 186 )...................... H. tenuis