mastigospore (μάστιξ, ιγος, lash), a plant with ciliate or flagellate disseminules.
melleus, honey-colored.
meridian, used chiefly as a synonym for apparent noon; also an imaginary line of longitude.
mesad (μέσος, middle), a mesophyte; mesophilous, growing in moist soils; mesophyll, the leaf of a mesophyte; mesophyte, a plant of moist soils; mesophyti´um, a mesophytic formation; mesosta´tic (στατικίς, standing), completing the succession under mesophytic conditions; mesotro´pic (τροπικός, turning), applied to successions which become mesophytic.
-meter (μέτρον, measure), combining term for instrument.
micti´um (μικτόν, mixture), a mixed formation.
migrant, a plant that is migrating or invading.
migration (migratio, removal), the movement of plants into new areas; migration circle, a circle employed to measure migration.
mobile, able to be moved, i. e., modified for migration.
monochronic (μόνος, single, χρόνος, time), arising but once; monogenesis (γένεσις, origin), the origin of a new form at a single place or time; monophyle´sis (φῦλον, race), origin from a single ancestral type; monoto´pic (τόπος, place), arising at one place only.