Selected material studied: Moratalla, Benizar, Rincón de las Cuevas, 30SWH8835, 950m, 11-IV-2003, Cano 1213 (MUB 15431).
Stream banks and submerged in water.
Previous records: Ros & Llimona (1984) subRhynchostegium riparioides; Ros & Guerra (1987) sub R. riparioides; Cano et al. (2004).
