4,295 articles
Philadelphus
Philadelphus, commonly called mock orange, is a genus of about 44 species of deciduous flowering shrubs in the family Hydrangeaceae, named by Linnaeus in 1753.
Philippine Rice Research Institute
Philippine Rice Research Institute (PhilRice), DA-attached government corporate entity created by EO 1061 in 1985, headquartered in Science City of Muñoz, Nueva Ecija; develops rice varieties and leads RCEF seed distribution to millions of farmers.
Phillyrea
Phillyrea (mock privet) is a Mediterranean genus of evergreen Oleaceae shrubs with two accepted species, P. angustifolia and P. latifolia, known for diallelic self-incompatibility, androdioecy, and strong drought tolerance.
Philodendron
Philodendron, also known as Arosma, is a genus of several hundred evergreen flowering plants in the arum family, native from Mexico to tropical America and widely grown as houseplants.
Philodendron hederaceum
Philodendron hederaceum (heartleaf philodendron, formerly P. scandens) is a hemiepiphytic Araceae vine native from Mexico to tropical South America, a popular low-light houseplant with toxic sap, invasive in Hawaii, Florida, and Singapore.
Phlebodium aureum
Phlebodium aureum (golden polypody, blue star fern; syn. Polypodium aureum) is an epiphytic Polypodiaceae fern native from the southeastern USA to South America, with golden-scaled creeping rhizomes, blue-green pinnatifid fronds, allotetraploid hybrid origin, and common houseplant use.
Phleum
Phleum (timothy or cat's-tail grasses) is a genus of about 14 annual and perennial Poaceae grasses with dense cylindrical spikelike panicles and glume awns; type species Phleum pratense, temperate Northern Hemisphere, important hay forage.
Phleum pratense
Phleum pratense (timothy, timothy grass) is a perennial Eurasian bunchgrass of Poaceae, named for farmer Timothy Hanson, grown worldwide as cool-climate hay and pasture forage, intolerant of drought.
Phloem
Phloem is the plant vascular tissue conducting sugars from source leaves to sinks via sieve elements, companion cells, and sieve plates. Transport follows Münch's osmotically driven pressure flow at about 1 cm per minute.
Phlomis
Phlomis (Jerusalem sage) is a Lamiaceae genus of about 91-100 perennial herbs and shrubs native from the Mediterranean to Central Asia, now separated from Phlomoides, used as herbal tea and in traditional medicine.
Phlox
Phlox, a genus of about 69 species in Polemoniaceae (Ericales), native from Siberia and Mongolia across North America to northern Mexico; includes garden phlox, moss phlox, and annual phlox.
Phoenix (plant)
Phoenix (date palms) is a genus of about 14 dioecious Arecaceae palms, tribe Phoeniceae, native from Africa and Crete to Malesia; includes Phoenix dactylifera, the cultivated date palm, and ornamentals like P. canariensis.
Phoenix canariensis
Phoenix canariensis, the Canary Island date palm, is a palm endemic to the Canary Islands, up to 21 m tall with thick trunks, green pinnate leaves, small orange fruits, close kinship and hybridization with Phoenix dactylifera, and widespread ornamental planting.
Phoradendron
Phoradendron, American true or leafy mistletoe, is a New World genus of hemiparasitic Santalaceae with about 271 accepted species, attached by woody-gall haustoria, less toxic than Viscum, and used in folk medicine.
Phormium
Phormium (New Zealand flax, harakeke) is a genus of two Asphodelaceae species native to New Zealand and Norfolk Island, grown for fibre, weaving, and ornament, with erect capsules distinguishing P. tenax.
Photorespiration
Photorespiration: light-dependent O2 uptake and CO2 release in oxygenic photosynthesis, also called the C2 cycle. Rubisco oxygenation produces toxic 2-phosphoglycolate, recycled at high ATP and NADPH cost; target of crop bypass engineering.
Phragmipedium
Phragmipedium (slipper orchids) is a genus of about 15 Neotropical Cypripedioideae orchids from SW Mexico to Bolivia and Brazil, defined by a three-chambered ovary, wet streamside habitats, and CITES Appendix II listing.
Phragmites australis
Phragmites australis (common reed) is a globally widespread wetland grass of Poaceae, native on every continent except Antarctica; its introduced European lineage is a major North American wetland invader, while the species is also widely used in phytoremediation.
Phycology
Phycology (algology) is the study of algae, from Greek phykos, seaweed. It covers algal taxonomy, cryptic species, 14 phyla and 63 classes, harmful bloom monitoring, and omics-based ecology.
Phyla
Phyla (frog fruit, matchweed) is a small genus of creeping Verbenaceae herbs in tribe Lantaneae, unique for malpighiaceous hairs; revisions reduced it from five species to two, P. betulifolia and the widespread P. nodiflora.
Phyllanthaceae
Phyllanthaceae Martinov, the leaf-flower family, is a pantropical family of about 60 genera and 2,000 species in Malpighiales, segregated from Euphorbiaceae sensu lato since APG II (2003), with two ovules per locule, no latex, and Phyllanthus as its largest genus.
Phyllanthus
Phyllanthus (leafflower), a large pantropical genus of Phyllanthaceae established by Linnaeus in 1753, with 700 to 1270 species depending on circumscription; paraphyletic with Breynia, Glochidion, Synostemon nested; many species used medicinally.
Phyllanthus amarus
Phyllanthus amarus (Bhumyamalaki, stone breaker) is a pantropical annual herb, native to the Americas, used in Ayurveda for liver disorders; marker lignans phyllanthin and hypophyllanthin; often confused with P. niruri; Cochrane finds no convincing HBV benefit.
Phyllanthus emblica
Phyllanthus emblica (syn. Emblica officinalis), Indian gooseberry or amla, an Asian Phyllanthaceae tree whose vitamin C-rich fruit is used in Ayurveda and shows lipid-lowering effects in randomized trials.
Phyllocladus
Phyllocladus (celery pines), a genus of Podocarpaceae conifers from Malesia, New Guinea, Tasmania, and New Zealand, with flattened leaf-like branchlets (phylloclades), four to five species, and a Gondwanan fossil record.
Phyllocladus aspleniifolius
Phyllocladus aspleniifolius, the celery-top pine, is a conifer of Tasmania's rainforests named for celery-like branchlets, growing to 20 m with wood used for furniture and ship masts.
Phyllostachys
Phyllostachys (刚竹属) is a genus of running woody bamboos in Poaceae, native from the Himalaya to southern China and Taiwan, with two branches per node and leptomorph rhizomes; economically important for Moso bamboo, timber, pulp, and shoots, and regulated as invasive running bamboo in parts of North America.
Phyllostachys edulis
Phyllostachys edulis, moso bamboo (毛竹, maozhu; Japanese 孟宗竹), a large temperate running bamboo native to central and southern China and Taiwan; synonyms P. pubescens and P. heterocycla; China's most important bamboo, ~4.43 million ha, grown for edible shoots and timber culms.
Phymatocerotaceae
Phymatocerotaceae is a family of hornworts whose only genus, Phymatoceros, comprises small thalloid plants known for prolific ventral tubers and a single chloroplast per cell.
Physalis
Physalis, the ground cherry or husk tomato genus of Solanaceae, about 90 American species whose berries grow inside an inflated papery calyx; includes goldenberry (P. peruviana), tomatillo (P. philadelphica), and physalin-producing medicinal species.