Figure 7 in Range expansion of some non-indigenous seaweeds along the coasts of Brittany - English Channel

Figure 7: Polyopes lancifolius from Brittany: (a) general habit showing characteristic proliferations; (b) in situ material from Bréhat (picture by T. Burel); (c) dried specimen from the Gulf of Morbihan (Herbarium A. Le Roux), winter form lacking proliferations; (d) vertical section through old axis showing a thick cortex. Scale bars: (a–c) 2 cm; (d) 50 µm.