Trees, shrubs and tall plants cannot survive. About 150 species of bryophytes dominate the grassy turf, of which two-thirds are mosses and a third liverworts. The most common species are "Aulacomnium", "Ditrichum", "Drepanocladus", "Orthothecium" and "Tomenthypnum". More than 100 species of lichen are found on the island, the most common being "Caloplaca", "Lecanora", "Lecidea", "Ochrolechia" and "Rinodina". There are sixteen species of grass and about 100 species of algae, most commonly Cyanophyta and Diatomea. Fifty-seven species of vascular plants have been reported. The most common are Arctic poppy and saxifraga, which grow everywhere, independent of habitat, with the latter's nine species being found on all islands. Common plants in wet areas are "Alopecurus magellanicus" (alpine meadow-foxtail grass), buttercups and polar willow. "Alopecurus magellanicus" and "Papaver dahlianum" are the tallest plants, able to reach heights of .