Flowering Plants, PIL-ROS
Angiosperm, any of about 300,000 species of flowering plants, the largest and most diverse group within the kingdom Plantae. Angiosperms represent approximately 80 percent of all the known green plants now living. The angiosperms are vascular seed plants in which the ovule (egg) is fertilized and develops into a seed in an enclosed hollow ovary. The ovary itself is usually enclosed in a flower, that part of the angiospermous plant that contains the male or female reproductive organs or both.
Flowering Plants Encyclopedia Articles By Title
Pilea, genus of 600–715 species of herbaceous creeping plants in the nettle family (Urticaceae) but lacking the......
pili nut, (Canarium ovatum), tropical tree of the family Burseraceae, cultivated for its edible seeds known as......
pimiento, (Capsicum annuum), any of various mild peppers in the nightshade family (Solanaceae). The term pimiento,......
pimpernel, (genus Anagallis), any of several plants of the primrose family (Primulaceae), consisting of about 30......
pin oak, either of two species of North American ornamental and timber trees belonging to the red oak group. The......
pineapple, (Ananas comosus), perennial plant of the family Bromeliaceae and its edible fruit. Pineapple is native......
pink, (genus Dianthus), genus of approximately 300 species of several flowering plants in the pink family (Caryophyllaceae).......
Piperaceae, the pepper family in the order Piperales, commercially important because of Piper nigrum, the source......
Piperales, order of flowering plants comprising 3 families, 17 genera, and 4,170 species. Along with the orders......
pipsissewa, any evergreen, herbaceous plant of the genus Chimaphila, of the heath family (Ericaceae). C. umbellata,......
pistachio, (Pistacia vera), small tree of the cashew family (Anacardiaceae) and its edible seeds, grown in dry......
Pistacia, genus of nine species of aromatic trees and shrubs in the cashew family (Anacardiaceae). Most species......
pitcher plant, any carnivorous plant with pitcher-shaped leaves that form a passive pitfall trap. Old World pitcher......
Pittosporaceae, family of nine genera of trees, shrubs, or vinelike plants, in the order Apiales, distributed from......
pittosporum, Any of various evergreen shrubs or trees, mainly from Australia and New Zealand, that make up the......
plane tree, any of the 10 species of the genus Platanus, the only genus of the family Platanaceae. These large......
Plantaginaceae, plantain family of flowering plants (order Lamiales), comprising 90 genera and about 1,900 species......
Plantago, a genus in the family Plantaginaceae (order Lamiales) with about 265 species. The small plants usually......
plantain, major group of banana varieties (genus Musa) that are staple foods in many tropical areas. The edible......
Pleurothallis, large genus of orchids (family Orchidaceae) native to tropical and temperate areas of the Americas.......
plum, any of various trees or shrubs in the genus Prunus and their edible fruits. Plums are closely related to......
plume grass, (genus Saccharum), genus of about 20 species of grasses in the family Poaceae, native to warm regions......
Poaceae, grass family of monocotyledonous flowering plants, a division of the order Poales. The Poaceae are the......
Poales, grass order of flowering plants, containing the grass family (Poaceae), economically the most important......
Podostemaceae, riverweed family of dicotyledonous flowering plants in the order Malpighiales, with 48 genera and......
Pogonia, genus of two species of terrestrial orchids (family Orchidaceae) native to temperate zones of Asia and......
poinsettia, (Euphorbia pulcherrima), well-known member of the spurge family (Euphorbiaceae), commonly sold as an......
poison hemlock, (Conium maculatum), poisonous herbaceous plant of the parsley family (Apiaceae). Poison hemlock......
poison ivy, (Toxicodendron radicans), poisonous vine or shrub of the cashew family (Anacardiaceae), native to eastern......
poison oak, either of two species of poisonous plants of the cashew family (Anacardiaceae), native to North America.......
poison sumac, (Toxicodendron vernix), poisonous shrub or small tree of the cashew family (Anacardiaceae), native......
pokeweed, (Phytolacca americana), strong-smelling plant with a poisonous root resembling that of a horseradish.......
Polemoniaceae, the phlox family of plants, comprising about 18 genera and some 385 species of flowering plants......
pomegranate, (Punica granatum), bush or small tree of the family Lythraceae and its fruit. The juicy arils of the......
pondweed, any of numerous cosmopolitan freshwater plants sometimes grown in ponds or aquariums. They belong to......
poplar, (genus Populus), genus of some 35 species of trees in the willow family (Salicaceae), native to the Northern......
poppy, any of several flowering plants of the poppy family (Papaveraceae), especially species of the genus Papaver.......
Portulacaceae, the purslane family of flowering plants, in the order Caryophyllales, with about 15 genera and 500......
potato, (Solanum tuberosum), annual plant in the nightshade family (Solanaceae), grown for its starchy edible tubers.......
pothos, (Epipremnum aureum), hardy indoor foliage plant of the arum family (Araceae) native to southeastern Asia.......
prayer plant, (Maranta leuconeura), flowering plant of the family Marantaceae, native to the New World tropics.......
prickly ash, (genus Zanthoxylum), genus of about 200 species of aromatic trees and shrubs of the rue family (Rutaceae),......
prickly pear, any of several species of flat-stemmed spiny cacti of the genus Opuntia (family Cactaceae) and their......
prickly poppy, (genus Argemone), genus of approximately 30 species of North American and West Indian plants (one......
primavera, (species Cybistax donnel-smithii), timber tree of Central America with brilliant yellow flowers, or......
primrose, flowering plants of the genus Primula of the family Primulaceae, with 490–600 species, chiefly occurring......
Primulaceae, the primrose family, of the order Ericales, containing 58 genera and nearly 2,600 species of flowering......
privet, any of about 40 to 50 species of shrubs and small trees belonging to the genus Ligustrum of the family......
Proteales, the protea order of eudicotyledonous flowering plants, with 4 families, about 85 genera, and nearly......
Prunus, genus of more than 400 species of flowering shrubs and trees in the rose family (Rosaceae). The genus Prunus......
Pterostyrax, genus of about four species of deciduous trees or shrubs, of the storax family (Styracaceae), native......
puccoon, any of several plants formerly used by certain North American Indians for dyes derived from the roots,......
pummelo, (Citrus maxima), citrus tree of the family Rutaceae, grown for its large sweet fruits. It is native to......
purple passion fruit, (Passiflora edulis), species of passion flower (family Passifloraceae) and its edible fruit.......
purslane, any of certain small, fleshy annual plants of the genus Portulaca (40–100 species), of the family Portulacaceae.......
pussy willow, any willow having large, cylindrical, silky catkins, specifically the species Salix caprea. See...
pussy-toes, any of several species of low-growing, gray-white, wooly plants of a genus (Antennaria) in the aster......
Puya, genus of South American plants of the pineapple family (Bromeliaceae) that contains about 200 species, including......
pyrethrum, any of certain plant species of the aster family (Asteraceae) whose aromatic flower heads, when powdered,......
quack grass, (Elymus repens), rapidly spreading grass of the family Poaceae. Quack grass is native to Europe and......
quaking grass, (genus Briza), genus of four species of slender annual or perennial grasses in the family Poaceae,......
quandong, (Santalum acuminatum), small hemiparasitic tree of the sandalwood family (Santalaceae), useful for its......
Queen Anne’s lace, (Daucus carota carota), biennial subspecies of plant in the parsley family (Apiaceae) that is......
quince, (Cydonia oblonga), a small tree or shrub of the rose family (Rosaceae), grown for its edible fruit. Quince......
quinoa, (Chenopodium quinoa), plant species grown for its tiny edible seeds. Quinoa is not a true cereal, and its......
radish, (Raphanus sativus), annual or biennial plant in the mustard family (Brassicaceae), grown for its large......
rafflesia, (genus Rafflesia), genus of about 42 species of parasitic plants native to Southeast Asia. All Rafflesia......
Rafflesiaceae, flowering plant family notable for being strictly parasitic upon the roots or stems of other plants......
ragweed, (genus Ambrosia), genus of about 40 species of weedy plants in the aster family (Asteraceae). Most species......
raisin tree, (species Hovenia dulcis), shrub or tree, of the buckthorn family (Rhamnaceae), native to East Asia......
rambutan, (Nephelium lappaceum), tree of the soapberry family (Sapindaceae). It is native to Malaysia, where it......
ramie, (Boehmeria nivea), fibre-yielding plant of the nettle family (Urticaceae) and its bast fibre, native to......
rampion, any member of the genus Phyteuma, of the bellflower family (Campanulaceae), consisting of about 40 species......
Ranunculaceae, the buttercup family (order Ranunculales), comprising about 2,252 species in 62 genera of flowering......
Ranunculales, the buttercup order of flowering plants, containing 7 families, nearly 164 genera, and around 2,830......
rapeseed, (Brassica napus, variety napus), plant of the mustard family (Brassicaceae) grown for its seeds, which......
raspberry, bramble fruit of the genus Rubus (family Rosaceae). Raspberries are an economically significant crop......
Rauvolfia, genus of plants in the dogbane family (Apocynaceae), with 110 species of shrubs and trees native to......
red maple, (Acer rubrum), large, irregularly narrow tree of the soapberry family (Sapindaceae), cultivated for......
red oak, any member of a group or subgenus (Erythrobalanus) of North American ornamental and timber shrubs and......
redbud, (genus Cercis), any of a genus of 10 species of shrubs to small trees in the pea family (Fabaceae), native......
reed, in botany, any of several species of large aquatic grasses, especially the four species constituting the......
rein orchid, (genus Platanthera), genus of about 100 species of terrestrial orchids (family Orchidaceae) found......
Rhipsalis, cactus genus of about 39 epiphytic species (family Cactaceae), native to tropical and subtropical America......
rhododendron, (genus Rhododendron), diverse genus of about 1,000 species of woody flowering plants in the heath......
rhodora, (Rhododendron canadense), deciduous shrub of the heath family (Ericaceae), native to northeastern North......
rhubarb, (Rheum rhabarbarum), a hardy perennial of the smartweed family (Polygonaceae) native to Asia and grown......
ribes, (genus Ribes), genus of some 150 to 200 species of shrubs of two distinct groups, the currants and the gooseberries,......
rice, (Oryza sativa), edible starchy cereal grain and the grass plant (family Poaceae) by which it is produced.......
rice-paper plant, (species Tetrapanax papyriferum), shrub or small tree of the ginseng family (Araliaceae), native......
river birch, (Betula nigra), ornamental tree of the family Betulaceae, found on river and stream banks in the eastern......
rock cress, (genus Arabis), genus of some 120 species of herbs belonging to the mustard family (Brassicaceae),......
rock rose, (Cistus), any of a genus of 18 species of low to medium-sized shrubs, in the rock rose family (Cistaceae),......
rocket, (genus Sisymbrium), genus of 90 species of plants of the mustard family (Brassicaceae). Rockets are often......
Rollinia, genus of 65 tropical American trees and shrubs belonging to the family Annonaceae (order Magnoliales).......
Rosaceae, the rose family of flowering plants (order Rosales), composed of some 2,500 species in more than 90 genera.......
Rosales, the rose order of dicotyledonous flowering plants, containing 9 families, 261 genera, and more than 7,700......
rose, (genus Rosa), genus of some 100 species of perennial shrubs in the rose family (Rosaceae). Roses are native......
rose of Jericho, either of two species of unrelated plants known for their ability to survive dessication. The......
rose of Sharon, (Hibiscus syriacus, or Althaea syriaca), shrub or small tree, in the hibiscus, or mallow, family......
