Some halophytes, such as Salicornia halophila and Suaeda salsa, have fleshy stems and leaves with high salt content; However, salt can combine with intracellular substances without harm; At the same time, they have low water potential and can absorb water from soil solution. These plants are called "true halophytes".
Some halophytes, such as Sedum, Tamarix, etc., have glands on their stems and leaves that can secrete salt, which can discharge excess salt absorbed from saline-alkali soil through the glands, so that the salt will be lost after the wind and rain. These plants are called "salt-secreting plants"
There are also some halophytes, such as mugwort, Elaeagnus angustifolia, sesbania and so on. Their roots have little permeability to salt and will not accumulate a lot of salt in their bodies. However, because they contain more soluble organic acids and sugars, the cell water potential decreases and the ability to absorb water from saline-alkali soil increases. These plants are called "halophytes".
Halophytes have the same characteristics, that is, their metabolism level is relatively low, their life activities are not very vigorous, and they can resist the harm of salt.