Hydropunctaria amphibia is a species of saxicolous (rock-dwelling), crustose lichen in the family Verrucariaceae. One of several marine lichens in the...

species, five Hydropunctaria lichens are considered marine species: H. adriatica, H. amphibia, H. aractina, H. orae, and H. oceanica. Hydropunctaria was circumscribed...

of the extent of the zone where it is found. Both H. maura and Hydropunctaria amphibia synthesize sucrose in response to high salt concentrations. It...