This page gathers the 2,041 dictionary entries belonging to the domain “Botany”, as labelled by Wiktionary. Each word leads to its full entry: definitions, etymology, pronunciation, examples. Page 13 of 21: from “palaceous” to “phyllopodium”.
- palaceous adj Of a leaf: having a spade-like shape.
- palate noun A projection in the throat of certain bilabiate flowers as the snapdragon.
- palea noun The interior chaff or husk of grasses.
- paleola noun A diminutive or secondary palea
- palinactinodromous adj Having three or more primary veins originating near the base of the leaf, with additional branching above.
- palisade cell noun Any of a layer of elongated cells, near the surface of leaves, that have chloroplasts that absorb a major portion of the light energy used…
- palisade tissue noun A layer of closely packed, cylindrical cells located beneath the upper epidermis of a leaf, and primarily responsible for photosynthesis.
- pallium noun A presumed gelatinous envelope of diatoms.
- palmate adj Having three or more lobes or veins arising from a common point.
- palmatilobed adj Synonym of palmatilobate; palmate lobed, with the divisions separated less than halfway to the common centre.
- palustral adj That requires a marshy habitat.
- palynomorph noun Any spore (derived from fungi, algae or spore-bearing embryophytes) or pollen grain (derived from seed-bearing embryophytes).
- papilionaceous adj Having a corolla in the form of a butterfly, with prominent wing-like petals; (generally) pertaining to the Faboidea (Papilionoidea) family…
- papilla noun A small fleshy projection on a plant.
- pappus noun The markedly reduced sepals of an Asteraceae floret that take the form of trichomes or scale attached to the ovary or seed.
- parabolic adj Of a leaf: ovate-oblong or ovate, obtuse and contracted below the apex.
- paracallus noun A substance resembling the callus of sieve-tubes, but differing in reaction and chemical constitution.
- paracarpel noun An organ attached to a carpel.
- paranodal adj Alongside a node
- paraphysis noun A minute jointed filament growing among the archegonia and antheridia of mosses, or with the spore cases, etc., of other flowerless plants.
- paraplectenchymatous adj Having a cellular structure superficially like parenchyma of vascular plants with hyphae going in all directions.
- paratonic adj Retarding a plant's growth.
- parenchyma noun The cellular tissue, typically soft and succulent, found chiefly in the softer parts of leaves, pulp of fruits, bark and pith of stems, etc.
- parenchymatous adj Consisting of or relating to the cellular tissue making up the softer parts of leaves, pulp of fruits, bark and pith of stems, etc.
- pari- prefix Even
- paries noun The wall of any cavity or organ.
- parietal adj Attached to the main wall of the ovary, and not to the axis; said of a placenta.
- parietary noun Any of several species of Parietaria.
- paroecious adj Having the male and female reproductive organs growing beside or near each other, as in certain cryptogams.
- parted adj Deeply cleft.
- parthen- prefix absence of fertilisation, asexual reproduction
- partial adj Subordinate.
- pascual adj Growing in pastures or grassy commons, among less rank herbage than pratal.
- patellula noun A flat, disk-like structure found on some plants (especially bryophytes), algae, and fungi, often aiding in reproduction or attachment to…
- patent adj Of a branch, leaf, etc.: outspread; also, spreading at right angles to the axis.
- patently adv Outspread, or spreading at right angles to the axis.
- pathfinder noun Synonym of honey guide.
- peapod noun The pod of the pea plant, that holds the seeds (the peas) until they ripen
- pearl verb Of aquatic plants: to produce visible bubbles on the stems and leaves during photosynthesis, usually in a simulated environment like an…
- pectinate adj Having narrow ridges or projections aligned close together like the teeth of a comb.
- pedate adj Having deeply divided lobes.
- pedatinerved adj Having the midrib stop short, with two strong lateral nerves proceeding from its base, giving rise to others that extend only to the apex.
- pedicel noun A stalk of an individual flower (or fruit, e.g., once fertilised) or spore-producing body within a cluster.
- pediferous adj Having a stalk or support.
- peduncle noun The stalk supporting an inflorescence or a solitary flower/fruit.
- pelargonic adj Of or pertaining to plants of the genus Pelargonium.
- peloria noun abnormal regularity; the state of certain flowers, which, being naturally irregular, have become regular through a symmetrical repetition…
- pelt noun A flat apothecium with no rim.
- pelta noun A flat apothecium with no rim.
- peltate adj Having the petiole attached to the lower surface instead of the margin.
- pencilled adj Marked with fine lines, as if with a pencil.
- penicillate adj Having tufts of fine hairs, or in the form of a tuft of fine hairs.
- pentacyclic adj Of a flower: composed of five whorls or organs.
- pentadelphous adj Of a flower or plant: having its stamens fused together at least partly by the filaments so that they form five separate groups, some of…
- pentarch adj Having five points of origin.
- percurrent adj Running through the entire length; running through from top to bottom, as the midrib of a dicotyledonous leaf, the nerve of a moss-leas, or…
- perennation noun The ability of an organism to survive from one germinating season to the next, especially under unfavourable conditions such as drought or…
- perennial noun A plant that is active throughout the year, or has a life cycle of more than two growing seasons.
- perennialize verb To return year after year as a perennial.
- perfect adj Having both male parts (stamens) and female parts (carpels).
- perfoliate adj Appearing to have the stem passing through the blade.
- perforation plate noun In a tracheary element, part of the cell wall that is perforated, present in vessel members but not in tracheid cells.
- perianth noun The sterile parts of a flower; collectively, the sepals and petals (or tepals).
- pericarp noun The outermost layer, or skin, of a ripe fruit or ovary.
- periclinal adj Of a type of cell division in a layer of cells that occurs parallel to an adjacent layer of cells.
- pericline noun A periclinal wall.
- pericyclic adj Of or relating to a pericycle
- periderm noun The outer layer of plant tissue comprising the phellem, phellogen and the phelloderm.
- perigone noun perianth
- perigonium noun The sterile parts of a flower; collectively, the sepals and petals (or tepals); the perianth.
- perigynium noun A specialized sheath-like bract that surrounds the ovary or fruit of some flowering plants, especially those in the family Cyperaceae…
- perigynous adj Having the stamens, petals or sepals situated around the ovary (especially, on the rim of the receptacle of a superior ovary).
- perikaryoplasm noun A zone of granular protoplasm seen in Cobaea scandens in the cytoplasm of the resting pollen mother-cell on its approaching division.
- periphysis noun A short, sterile hypha that develops from above the ascus and grows down a short distance, typically lining the internal walls of the…
- peripodium noun Synonym of perichaeth.
- peripterous adj Surrounded by a wing or border.
- peristome noun One or two rings of tooth-like appendages surrounding the opening of the capsule of many mosses.
- peritropal adj Having the axis of the seed perpendicular to the axis of the pericarp to which it is attached.
- perpetual adj Flowering throughout the growing season.
- persistent adj Lasting past maturity without falling off.
- personate adj Having the throat of a corolla nearly closed by a projection of the base of the lower lip (reminiscent of a mask), as in the flower of the…
- perula noun One of the scales of a leaf bud.
- pervious adj Of a body structure (especially the nostril of a bird): having a hole, perforate; also, wide open.
- petal noun One of the component parts of the corolla of a flower. It applies particularly, but not necessarily only, when the corolla consists of…
- petaloid adj Resembling the petal of a flower.
- petiole noun The stalk of a leaf, attaching the blade to the stem.
- petiolule noun The petiole of a pinna or pinnule.
- peucedanoid adj Of or like Peucedanum.
- phalange noun A bundle of stamens joined by their filaments.
- phalanx noun A bundle of stamens, in diadelphous and polyadelphous flowers.
- phloem noun A vascular tissue in land plants primarily responsible for the distribution of sugars and nutrients manufactured in the shoot.
- phoenicoid adj Belonging or relating to the palms of the subfamily Phoenicoideae.
- photoepinasty noun A disproportionately rapid growth of the upper surface of dorsiventral organs, such as leaves, through the stimulus of exposure to light.
- photometric adj Adjusting position with respect to light.
- phrase name noun An informal name given to a plant taxon that has not yet been given a formal scientific name. It consists of the generic name, "sp." (to…
- phyllode noun A flattened petiole or leaf rachis that resembles and functions as a leaf, and may or may not be combined with an actual lamina.
- phyllon noun A leaf, or something (flat) resembling a leaf.
- phyllophorous adj Bearing or producing leaves.
- phylloplane noun A phyllosphere of leaves
- phyllopodium noun The part of the stipe that is proximal or basal of the articulation (joint) and remains attached to the rhizome after the frond has…