insolation, exposure to intense heat and light.
isabellinus, leather-colored.
isolation, separation by barriers.
isopho´tic (ἴσος, equal), equally illuminated; isophotophyll, a leaf in which both halves of the chlorenchym are alike, due to equal illumination.
-ium (-εῖον, locative affix), suffix denoting a formation.
labile, plastic, easily modified.
lauri´um (λαύρα, drain), a drain formation; laurad, a drain plant.
limni´um (λίμνη, lake), a lake formation; limnad, a lake plant; limnodium (λιμνῶδες, marshy ground), a salt marsh formation; limnodad, a plant of a salt marsh.
lochmi´um (λόχμη, thicket), a thicket formation; lochmad, a thicket plant.
lophi´um (λόφος, crest, hill), a hill formation; lophad, a hill plant; lophospore, a plant with plumose disseminules.