4,295 articles
Diospyros
Diospyros (persimmon, ebony) is a genus of about 700-800 Ebenaceae trees and shrubs, pantropical in range, known for D. kaki fruit, ebony timber, and naphthoquinone chemistry.
Diospyros kaki
Diospyros kaki (Oriental, Japanese, or Chinese persimmon; kaki; Sharon fruit) is a hexaploid Ebenaceae tree native to China, cultivated over 2,000 years, with PCNA non-astringent cultivars like Fuyu and astringent ones like Hachiya.
Diospyros melanoxylon
Diospyros melanoxylon (tendu, kendu, Coromandel ebony), an Ebenaceae tree native to India and Sri Lanka, whose leaves wrap bidis, supporting over 12 million livelihoods, and which yields triterpenes with reported antidiabetic activity.
Diospyros virginiana
Diospyros virginiana, American or common persimmon (possumwood, simmon), a slow-growing dioecious Ebenaceae tree of the eastern and central United States with frost-sweetened orange fruit, hard ebony-like wood, and use as rootstock for Diospyros kaki.
Diphasiastrum
Diphasiastrum, ground cedars, is a genus of clubmosses (Lycopodiaceae) published by Holub in 1975, with flattened fan-like branches, underground mycorrhizal gametophytes, x=23, and extensive hybridization in Central Europe; sometimes synonymized with Lycopodium.
Diphasiastrum digitatum
Diphasiastrum digitatum (Dill. ex A. Braun) Holub, southern ground-cedar or fan clubmoss, is a North American clubmoss (Lycopodiaceae) with flat fan-shaped branches, 15–50 cm erect shoots, and 2–5 strobili, native from eastern Canada to the eastern and north-central USA, globally secure (G5).
Diplotaxis
Diplotaxis is a genus of 39 Brassicaceae species native from Europe and the Mediterranean to the Himalaya, including wild rocket (D. tenuifolia) and wall rocket (D. erucoides), salad greens rich in glucosinolates and quercetin flavonols.
Dipsacales
Dipsacales, also called the honeysuckle order, is an order of campanulid flowering plants with about 1,100 species in two families, Caprifoliaceae and Viburnaceae (Adoxaceae), including Lonicera, Viburnum, and Scabiosa.
Dipsacus
Dipsacus (teasels) is a genus of 21 accepted spiny Caprifoliaceae herbs native to Europe, North Africa, and temperate Asia, known for wool-napping flower heads, the Chinese medicine Dipsaci radix from D. asper, and invasive weedy species.
Dipterocarpaceae
Dipterocarpaceae (dipterocarps), a pantropical family of 17 genera and roughly 500-700 resinous tree species centered in Southeast Asian lowland rain forests, with winged 2-5-winged nuts, mast fruiting, ectomycorrhizas, and 75% of species threatened.
Dipterocarpus
Dipterocarpus (keruing, gurjun) is a genus of about 65-70 large resinous Dipterocarpaceae trees native from SW India to western and central Malesia, the source of keruing construction timber and oleo-resin, with many threatened species.
Dipteryx
Dipteryx (cumaru, tonka bean trees; Dipteryx odorata, D. alata) is a Neotropical Fabaceae genus of 12 large canopy tree species, sources of tonka beans with coumarin, dense decking timber, and CITES Appendix II listing since 2022.
Dipteryx odorata
Dipteryx odorata, cumaru or tonka bean tree (Coumarouna odorata), a large Fabaceae tree of northern South America; seeds yield coumarin for perfume and food, timber traded as cumaru; IUCN Data Deficient, genus in CITES Appendix II.
Diseases of aroid foliage plants
Diseases of aroid foliage plants are the bacterial, fungal, and viral disorders of ornamental arum family (Araceae) crops, most seriously Xanthomonas bacterial blight of Anthurium.
Distichlis
Distichlis (saltgrass), genus of dioecious rhizomatous halophytic grasses in Poaceae, native to temperate and subtropical America and Australia; includes D. spicata, used for turf, forage, and salt marsh restoration.
Distichlis spicata
Distichlis spicata, saltgrass (also alkali, inland, or coastal saltgrass), is a rhizomatous halophytic grass native to temperate and subtropical America, tolerating salinity up to about 1 M NaCl and used for forage, turf, restoration, and salt-soil remediation.
Diuris
Diuris (donkey orchids, double tails) is a genus of about 102 accepted terrestrial orchid species in tribe Diurideae, native to southern and eastern Australia and the Lesser Sunda Islands, named for the two tail-like lateral sepals.
Diuris filifolia
Diuris filifolia (Cat's Face Orchid) is a rare tuberous orchid endemic to southwestern Western Australia, described by Lindley in 1840, with pale yellow brown-marked flowers, known from three disjunct swamp-edge populations and not seen for many years.
Dizi (笛子) (instrument)
Dizi (笛子), the Chinese transverse bamboo flute, also called di or hengdi; distinguished by the dimo membrane (mirliton) over an extra hole giving a bright buzzing tone; six finger holes, bangdi and qudi regional types, central to opera, sizhu, and modern Chinese orchestra.
Dodonaea
Dodonaea (hopbush, hopseed bush) is a genus of about 65–72 shrub and tree species in Sapindaceae, mostly Australian, with petal-less flowers and winged capsules; type species Dodonaea viscosa.
Dolichos
Dolichos L. is a conserved legume genus (Fabaceae, Phaseoleae, Phaseolinae) of about 55-60 Old World tropical species, mostly African; distinguished from Macrotyloma by short standard appendages, reticulate pollen and purple flowers; hyacinth bean (D. lablab) now Lablab purpureus.
Doodia
Doodia (rasp fern, hacksaw fern) is a genus of Blechnaceae ferns from Asia to Australasia and Hawaii, with scabrous fronds and linear sori; taxonomically merged into Blechnum by some treatments, retained by PPG I.
Doodia aspera
Doodia aspera (prickly rasp fern), Blechnum neohollandicum, a rough-fronded Blechnaceae fern from eastern Australia with pink new growth; probably extinct in New Zealand, 2n = 64.
Doona (organism)
Doona is a genus of 10 resin-bearing dipterocarp tree species endemic to Sri Lanka's wet-zone rainforests, also treated as Shorea sect. Doona; includes the rediscovered Doona ovalifolia.
Doronicum
Doronicum (leopard's bane) is a genus of perennial rhizomatous Asteraceae herbs with yellow daisy-like flower heads, native from NW Africa and Europe to the Himalaya, placed in tribe Doroniceae and used ornamentally and medicinally.
Dothistroma septosporum
Dothistroma septosporum, red band needle blight fungus, primary cause of Dothistroma needle blight of pines; Eurasian origin, worldwide distribution, dothistromin toxin, weather-driven epidemics, major plantation losses.
Douglas fir
Douglas fir (Pseudotsuga menziesii), also called Oregon-pine or Douglas-spruce, is a major western North American timber conifer that is not a true fir; two varieties, coast and Rocky Mountain, range from 19° to 55° N.
Draba
Draba (whitlow-grasses), largest genus of Brassicaceae in tribe Arabideae, over 370 arctic-alpine species on every continent except Australia and Antarctica; monophyletic but with artificial sectional classifications.
Dracaena (plant)
Dracaena, commonly called dragon plant or dragon tree, is a genus of about 224 species of trees and shrubs in the asparagus family, native to Old World tropics.
Dracaena cinnabari
Dracaena cinnabari, the Dragon's Blood Tree, is a Vulnerable IUCN-listed tree endemic to Socotra, Yemen, famed for red dragon's blood resin, umbrella canopies, slow 2–3 cm growth, and threats from goats, cyclones, and overgrazing.