phyad (φυή, form of growth), a vegetation form, e. g., tree, shrub, etc.
-phyll (φύλλον, leaf), combining term for leaf.
-phyte (φυτόν, plant), combining term denoting plant; phyteris (ἔρις, strife), plant competition; -phyti´um (φυτεῖον, place covered with plants), combining term for formation; phytostrote, a species migrating by means of the plant body.
pladobole (πλάδος, moisture), a plant whose seeds are scattered by propulsion due to moisture.
plasticity, the condition characterized by ready response to stimuli.
pnoi´um (πνοή, blast), a succession in an aeolian soil.
poi´um (πόα, meadow), meadow formation; poad, a meadow plant; poophyte, a meadow plant.
polyan´thous (πολύς, many, ἄνθος, flower), producing many flowers; polychro´nic (χρόνος, time), arising at two or more times; polyde´mic (δῆμος, district), occurring in two or more formations or natural regions; polygenesis (γένεσις, origin), the origin of a new form at two or more places or times; polyphyle´sis (φῦλον, race), the origin of a form, species, or genus from two or more ancestral types; polyspermatous (σπέρμα, seed), producing many seeds in each flower; polyto´pic (τόπος, place), arising at two or more distinct places.
ponti´um (πόντος, deep sea), a deep sea formation.
potami´um (ποταμός, river), a river formation; potamad, a river plant.