Echinodorus subalatus subsp. subalatus Echinodorus subalatus (Mart.) Griseb. subsp. subalatus sec. B. Ståhl & al. 2009=Alisma intermedium Mart. in Schult. & Schult. f., Syst. Veg. 7: 1609. 1830≡Echinodorus intermedius (Mart.) Griseb. in Cat. Pl. Cub. 218. 1866Holotype: Martius s.n.