hepodoche (ἕπω, follow), a secondary succession.
hizometer (ἵζω, to sink), an instrument for measuring gravitation water.
holard (ὅλος, whole), the total water-content of the soil.
hydrad (ὑδρο-, water), a hydrophyte; hydrochore, a plant distributed by water; hydroharmose, response to water stimuli; hydrophyll, the leaf of a hydrophyte; hydrophyte, a water plant; hydrophyti´um, a water plant formation; hydrophilous, water-loving; hydrosta´tic (στατικός, standing), completing the succession under hydrophytic conditions; hydrotropic (τροπικός, turning), applied to successions which become mesophytic.
hygrome´tric (ὑγρίς, wet), measuring or absorbing water; hygroscopic (σκοπέω, look), measurable only by a hygroscope; able to absorb moisture.
hyli´um (ὕλη, forest), a forest formation; hylad, a forest plant; hylocolum, dwelling in a forest; hylodi´um (ὑλώδης, wooded), a dry open woodland formation; hylodad, a plant of this formation; hylophyte, a forest plant.
hypsi´um (ὕψος, elevation), a succession caused by elevation.
-ile (locative affix), suffix denoting a society.
immobile, without effective devices for migration.
indigenous (indigena, sprung from the land), native.