fleshy leaves nature plant pointed sharp spiny succulent garden natural navelwort spring stone Umbilicus wall flowers leaf norway norwegian Sedum wild yellow green halophyte rosette soft xerophyte xerophytic brown caps color colour dry fawn folded folds fungi Gills hardened mushroom shape texture tough Cacti cactus flower pear Prickly protect protection Sardinia spine apressed cluster flattened pressed background dense details dof fleshy leaves fresh green macro monsoon ornamental small thick tiny tropical wallpaper cliff coast face fractured Great Britain rock Umbilicus rupestris united kingdom wales welsh