Displaying 2301 - 2325 out of 3058 Object(s)

Term Definition
Polyporate Having numerous apertures; e.g., pollen grains.
Polystelic Referring to a stem with more than one vascular bundle.
Polystemonous Having many stamens. Same as polyandrous. Polystemonous
Polystichous Inserted in many series around an axis. Contrast with distichous and tristichous.
Polysymmetric Same as actinomorphic.
Polysymmetric flower A flower, capable of being divided, by more than one line passing through the middle of the flower, into two equal parts that are mirror images of one another; e.g., in Gustavia (Lecythidaceae), species of Myrtaceae, and species of Rubiaceae. Same as acinomorphic, radially symmetrical, and regular flowers and opposite of zygomorphic, monosymmetric, bilateral, and irregular flowers. This term can refer to other plant parts as well. Polysymmetric flower
Pome An indehiscent fleshy fruit consisting of seeds surrounded by the pericarp which is in turn are surrounded by fleshy tissue derived from the hypanthium. This fruit type is found in species of Rosaceae subfam. Maloideae. Because part of the fruit is derived from the hypanthium, i.e. both the ovary and the hypanthium are part of the fruit, a pome is also considered to be a type of accessory fruit. Pome
Pore A small opening, usually round.
Poricidal anther dehiscence Referring to anthers that shed their pollen via terminal apertures; e.g., Gustavia spp. (Lecythidaceae) and Solanum spp. (Solanaceae). Poricidal anther dehiscence
Poricidal capsule A capsule that opens via apical pores, e.g., species of the genus Papaver. Poricidal capsule
Poricidal dehiscence Opening via pores; usually applied to anthers that shed their pollen via terminal apertures, e.g., Gustavia spp. (Lecythidaceae) and Solanum spp. (Solanaceae) or to capsular fruits (e.g., species of Papaver). Poricidal dehiscence
Poro apical Abertura localizada en el ápice de una estructura. Por ejemplo, en las flores de algunas especies de Monimiaceae o en las anteras de algunas especies como Gustavia augusta (Lecythidaceae).
Porrect Directed outward and perpendicular to the surface of origin.
Posterior On the side toward the axis. Same as adaxial.
Posterior end of flower In neotropical Lecythidaceae, the side of the flower from which the ligule arises. Posterior end of flower
Posterior hood extension An extension from the androecial hood split that gives rise to staminodes and/or vestigial stamens that are swept inward. Posterior hood extension
Posterior rib In Araceae, the connate or apparently united portion of the basal veins (those primary veins that join the midrib at the petiole attachment).
Praemorse With a jagged, irregular apex, appearing as if bitten off; e.g., the apices of the leaflets of Socratea exorrhiza (Arecaceae).
Prairie A treeless, grass-dominated vegetation found scattered throughout the neotropics.
Predation Referring to an interaction between two organisms one that lives on and at the expense of another, e.g., an insect larva that eats the embryo of a hickory nut or a species of Loranthaceae taking nutrients from a host plant. Predation
Prickle A sharp, pointed outgrowth of the epidermis of stems, leaves and other plant parts; e.g., on the trunk and branches of Ceiba pentandra (Bombacaceae) and Jacaratia spinosa (Caricaceae), on the stems of Smilax spp. (Smilacaceae), and on the stems and leaves of many species of Solanum. Prickle
Primary hemiepiphyte Referring to a plant (e.g., Clusia spp. and species of Araceae) that begins its epiphytic life without a connection to the ground but later develops aerial roots that reach the ground. Primary hemiepiphyte
Primary leaflet The first division of a compound leaf. Primary leaflet
Primary rachis The main rachis of a compound leaf or a compound inflorescence. Primary rachis
Primary vein See midrib.