A soil may be physically wet; but if the plants absorb the water only with difficulty, as in a salt marsh, then the soil is, as regards plants, physiologically dry.
The soil is physiologically dry.
Many forms, even when multicellular, have all their cells identical in structure and function, and are often spoken of as physiologically unicellular.
Physically wet but physiologically dry ha bit ats,f with the accompanying plant communities of fens, moors, and salt marshes.
There has, however, been performed upon halophytes very little physiologically experimental work which commands general acceptance.
