4,295 articles
Delphinium
Delphinium (larkspur) is a Ranunculaceae genus of 539 accepted annual and perennial herbs with spurred, zygomorphic flowers, native to temperate Old World and North America, toxic via norditerpenoid alkaloids, and a major ornamental cut flower.
Dendrobieae
Dendrobieae, an orchid tribe in Epidendroideae, contains Dendrobium (800–1500 species) and Bulbophyllum; molecular phylogenetics supports a broad Dendrobium with Asian and Australasian clades.
Dendrobium
Dendrobium (石斛属-related orchid genus) is a large, conserved orchid genus native from tropical and subtropical Asia to the Pacific and New Zealand, with roughly 1,100–1,500 species, major cut-flower horticulture, and medicinal species such as D. nobile used in traditional Chinese medicine.
Dendrobium bigibbum
Dendrobium bigibbum, the Cooktown orchid, is an epiphytic orchid native to the Tanimbar Islands, New Guinea, and Cape York, Queensland; floral emblem of Queensland since 1959, listed Vulnerable, with four accepted varieties.
Dendrobium nobile
Dendrobium nobile (Shihu, 石斛) is an epiphytic Himalayan orchid, a popular ornamental and a major Traditional Chinese Medicine source; its stem yields dendrobine and other alkaloids, and it is CITES Appendix II listed.
Dendrobium officinale
Dendrobium officinale (Tiepi Shihu, 鐵皮石斛) is a critically endangered Chinese epiphytic orchid whose dried stem is a traditional Chinese medicine and food, rich in polysaccharides, with a 12 g daily Pharmacopoeia limit.
Dendrobium speciosum
Dendrobium speciosum, the rock orchid or rock lily, is a large Australian lithophytic or epiphytic orchid described by James Edward Smith in 1804, native to NSW, Queensland, and Victoria, with cream racemes of up to 120 flowers and 5 to 9 recognized varieties.
Dendrocalamus
Dendrocalamus is a genus of about 80 accepted species of tropical Asian woody bamboos (Poaceae), erected in 1834 with type species D. strictus; best known is giant bamboo D. asper, used for construction, pulp, and edible shoots.
Dendrocalamus asper
Dendrocalamus asper, giant bamboo or sweet bamboo (马来甜龙竹, buluh betong), a tropical clumping bamboo native from Bangladesh to Taiwan and Malesia, grown 15-30 m tall for construction culms and edible shoots.
Dendroceros
Dendroceros, a pantropical hornwort genus in Dendrocerotaceae with about 30–41 species, is the only epiphytic hornwort, with midrib-and-perforated-wing thalli, one star-shaped chloroplast per cell, modified pyrenoid, and multicellular spores.
Dendrocnide moroides
Dendrocnide moroides, gympie-gympie or mulberrylike stinging tree, is a Queensland and NSW rainforest shrub whose silica-tipped hairs inject gympietide neurotoxins causing months of pain.
Dendroctonus frontalis
Dendroctonus frontalis, the southern pine beetle, a 3 mm Scolytinae bark beetle of pines from Honduras to New England; kills hosts via frontalin-driven mass attacks, S-shaped galleries, and fungal symbionts.
Dendroctonus micans
Dendroctonus micans, the great spruce bark beetle (European spruce bark beetle), is a Palaearctic bark beetle pest of spruce from Siberia to Britain, controlled mainly by the specific predator Rhizophagus grandis.
Dendroctonus rufipennis
Dendroctonus rufipennis, the spruce beetle, is a native North American bark beetle killing mature spruce across the continent. Distinguished from Ips typographus and D. ponderosae by its spruce hosts, two-year life cycle, and major Alaska and Yukon outbreaks.
Dendrolycopodium
Dendrolycopodium (tree-clubmoss) is a clubmoss genus in Lycopodiaceae, subfamily Lycopodioideae, established by A. Haines in 2003 from Lycopodium; five species including D. obscurum, x=34, stalked terminal strobili.
Dendrolycopodium obscurum
Dendrolycopodium obscurum, flat-branched tree-clubmoss or princess-pine, is a North American clubmoss described by Linnaeus in 1753 as Lycopodium obscurum; tree-like shoots, underground stems, homosporous cones, and confirmed hybridization with D. dendroideum.
Dendrophylax lindenii
Dendrophylax lindenii, the ghost orchid (also palmpolly, frog orchid), is a leafless epiphytic orchid of south Florida and Cuba with green photosynthetic roots, night-fragrant white flowers, hawk moth pollination, and G1/endangered conservation status.
Dent corn
Dent corn, a class of Zea mays field corn, has hard side endosperm and a soft floury crown that dents on drying. Descended from northern flint crossed with southern dent, it dominates U.S. Corn Belt production for feed and ethanol.
Department of forests herbarium
Department of Forests herbarium, also called the Alevkaya or North Cyprus Herbarium, a pressed-plant collection in the Kyrenia Mountains founded with botanist Deryck Viney and opened 9 November 1989 as North Cyprus's first herbarium, with about 450 species at opening.
Deschampsia
Deschampsia (hair grass), Poaceae genus established by Palisot de Beauvois in 1812, type D. cespitosa; about 64 species native from subarctic to temperate zones, including Antarctic D. antarctica.
Desiccation tolerance in ferns
Desiccation tolerance in ferns is the ability of certain ferns and lycophytes to lose almost all cellular water, suspend metabolism, and resume normal function after rehydration.
Desmodium
Desmodium (ticktrefoil, tickclover) is a genus of ~178 accepted Fabaceae species with lomentaceous pods bearing hooked hairs, native to the New World, Tropical Africa, and the southern Arabian Peninsula, used as forage legumes and in push–pull pest control.
Detasseling
Detasseling removes the tassel from female maize plants in hybrid seed corn fields to prevent self-pollination; done by hand or machine, with male sterility systems like CMS and Ms44-SPT as alternatives, costing about 14% seed yield when manual.
Dewberry
Dewberry, trailing brambles of genus Rubus (R. flagellaris, R. trivialis, R. caesius, blåhallon, salmbär), low vine-like canes rooting at tips, red-haired slender thorns, earlier-ripening blackberry-like fruit, distinct from upright blackberries.
Dialium
Dialium L. is a pantropical genus of Fabaceae trees (subfamily Dialioideae), type species D. indum, with about 37 accepted species, indehiscent edible-pulped fruits (velvet tamarind, keranji), and centers of diversity in West-Central Africa and western Malesia.
Dianthus
Dianthus (pinks, carnations, sweet William) is a genus of about 384 accepted species in Caryophyllaceae, native from Europe to temperate Asia, Africa, and Subarctic America, with tubular calyces, five clawed petals, and capsules opening by four teeth.
Dianthus barbatus
Dianthus barbatus, Sweet William, is a Caryophyllaceae biennial/short-lived perennial native from European mountains to N. Korea, grown for fragrant clustered flowers; parent of Fairchild's 1717 first artificial plant hybrid.
Dianthus caryophyllus
Dianthus caryophyllus, the carnation or clove pink, a Mediterranean Caryophyllaceae subshrub and major cut-flower crop; diploid 2n=30, third most traded flower, Colombia top exporter, blue GM varieties exist.
Diatom
Diatoms (Bacillariophyceae) are single-celled golden-brown algae with silica cell walls (frustules), 2–500 µm, 20,000 to 2 million estimated species, driving ~40% of oceanic carbon fixation and used in water monitoring and diatomite.
Dicentra
Dicentra, the true bleeding-hearts, is a genus of eight perennial herb species in Papaveraceae native from eastern Asia and Japan to North America; formerly broader, it was split in 1997, moving the garden bleeding heart to Lamprocapnos.