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Dracaena draco
Dracaena draco, the Canary Island dragon tree or drago, is an Endangered tree-like monocot of the Canary Islands, Madeira, Cabo Verde, and Morocco, known for dragon's blood resin, flowering-driven branching, and the ancient El Drago Milenario of Tenerife.
Dracaena fragrans
Dracaena fragrans (corn plant, cornstalk dracaena) is a tropical African Asparagaceae tree or shrub with fragrant night-opening flowers, a common houseplant, formerly split as D. deremensis, IUCN Least Concern.
Dracaena sanderiana
Dracaena sanderiana, lucky bamboo or ribbon plant, is a West African Asparagaceae shrub sold as a houseplant; not a true bamboo, toxic to cats and dogs via saponins, and the top benzene-removing plant in an 8-species screening study.
Dracaena trifasciata
Dracaena trifasciata (syn. Sansevieria trifasciata), snake plant or mother-in-law's tongue, is a rhizomatous African geophyte in Asparagaceae, reclassified from Sansevieria to Dracaena in 2017, native from Nigeria to Tanzania, 2n=40, widely grown as a houseplant.
Dracocephalum
Dracocephalum (dragonhead) is a Lamiaceae genus of about 70 aromatic herb species of the temperate Northern Hemisphere; Hyssopus and Lallemantia are embedded within it, and D. moldavica is its most-studied medicinal species.
Dracula vampira
Dracula vampira, the vampire orchid, is an epiphytic Ecuadorian cloud-forest orchid described in 1978, with black-veined 20-30 cm flowers, mushroom-mimic pollination, CITES Appendix II listing, and threats from wild collection.
Dracunculus
Dracunculus (dragon arums) is a genus of two tuberous aroid species, D. canariensis and D. vulgaris, native from Macaronesia to SW Türkiye, in tribe Areae, with thermogenic purple inflorescences.
Dragon's blood
Dragon's blood (Resina Draconis, Xuejie, sangre de drago) is a deep red resin from Croton, Dracaena, Daemonorops, and Pterocarpus species, used as varnish, dye, incense, and traditional medicine, with clinical trials in wound healing, antithrombosis, and diarrhea.
Dragon's Breath (chili pepper)
Dragon's Breath is a British-bred Capsicum chinense chili cultivar unveiled at the 2017 Chelsea Flower Show with an unverified 2.48 million SHU heat claim, never recognized by Guinness; later tests measured far lower values.
Drake university herbarium
Drake University herbarium: the plant specimen collection of Drake University, Des Moines, Iowa, founded 1958, about 3,400 specimens (2020), curated by biology professor Thomas Rosburg and housed in the Biodiversity Center; distinct from the Drake del Castillo herbarium in Paris.
Drimia maritima
Drimia maritima, maritime squill or sea onion (syn. Urginea maritima, Scilla maritima), is a Mediterranean bulbous geophyte with toxic bufadienolide glycosides; white squill is medicinal, red squill (scilliroside) a rodenticide.
Drimys
Drimys (canelo, winter's bark) is a genus of seven vessel-less evergreen Winteraceae trees and shrubs native from Mexico to southern South America, described by the Forsters in 1776, with Australasian species split off into Tasmannia.
Drosera
Drosera, the sundews, is a genus of 260 accepted carnivorous plant species with sticky flypaper traps, cosmopolitan in distribution, sister to Dionaea and Aldrovanda, richest in Australia and Brazil, and long used medicinally.
Drosera cultivars and hybrids
Drosera cultivars and hybrids are named sundew plants: cultivars are registered with the International Carnivorous Plant Society, and hybrids like Drosera × obovata carry botanical names.
Droseraceae
Droseraceae, the sundew family, is a family of carnivorous flowering plants comprising three genera: the sundews (Drosera), the Venus flytrap (Dionaea), and the aquatic waterwheel plant (Aldrovanda).
Drought Resistance
Drought resistance is the integrated capability of plants to escape, avoid, or tolerate water deficit, via four mechanisms (escape, avoidance, tolerance, recovery); key crops include sorghum, millet, pigeon pea, and cowpea.
Drunken noodles (ผัดขี้เมา)
Drunken noodles (ผัดขี้เมา, pad kee mao) is a spicy Thai stir-fry of wide sen yai rice noodles with holy basil, bird's-eye chilies, garlic, oyster sauce, and dark soy; no alcohol, spicier cousin of pad see ew.
Drupe
Drupe (stone fruit): a fleshy fruit with a three-layered pericarp, thin exocarp, fleshy mesocarp, and hard lignified endocarp (pit or pyrene) around usually one seed; examples peach, cherry, plum, coconut, olive, almond, coffee.
Dryas
Dryas is a genus of dwarf shrubs in the rose family, native to subarctic and subalpine regions of the Northern Hemisphere and best known for the mountain avens.
Dryas octopetala
Dryas octopetala, mountain avens or eightpetal mountain-avens, is a circumpolar arctic-alpine evergreen subshrub of Rosaceae with usually eight-petaled white flowers; it names the Older and Younger Dryas cold periods and is Iceland's national flower.
Drymaria arenarioides
Drymaria arenarioides (alfombrilla, lightning weed, sandwort drymary), a Caryophyllaceae perennial herb native to Mexico; federal noxious weed, saponins toxic to cattle, sheep, and goats.
Dryopteridaceae
Dryopteraceae, the wood fern family, is one of the largest terrestrial and epiphytic fern families, typified by Dryopteris, containing over 2,100 species and x=41 spores.
Dryopteris
Dryopteris (wood ferns, buckler ferns), genus Adanson 1763 in Dryopteridaceae, about 400 species, x=41, scaly rhizomes and reniform indusia; includes male fern D. filix-mas and absorbed genera Acrophorus, Diacalpe, Dryopsis, Nothoperanema, Peranema.
Dryopteris filix-mas
Dryopteris filix-mas, the male fern, a circumboreal deciduous wood fern (Dryopteridaceae) with 2-pinnate fronds to 1.2 m; allotetraploid from D. caucasica and D. oreades; RHS Award of Garden Merit; NatureServe G5.
Dryopteris marginalis
Dryopteris marginalis, marginal wood fern or marginal shield fern, is an evergreen Dryopteridaceae fern native from Greenland and Canada to the USA, growing in rocky, boulderfield temperate forests with sori along pinna margins.
Duranta
Duranta (golden dewdrop, skyflower) is a Verbenaceae genus of Neotropical shrubs and small trees, type species Duranta erecta, recognized by axillary spines and yellow four-pyrene drupes; about 29-35 species, ornamental, invasive, and toxic.
Duranta erecta
Duranta erecta (golden dewdrop, pigeon berry, skyflower; synonym Duranta repens) is a thorny Verbenaceae shrub native from Mexico to South America and Florida, grown ornamentally, toxic to people via saponin-rich berries, and invasive in Florida, Australia, China, Taiwan, and Fiji.
Durio
Durio is a genus of about 29 accepted Southeast Asian trees in Malvaceae, native from Indo-China to western Malesia, centering on Borneo; it includes the durian, Durio zibethinus, the only widely cultivated species, plus edible wild relatives and timber trees.
Durio zibethinus
Durio zibethinus (durian) is a Malvaceae tree native to Sumatra and Borneo, the only Durio species grown commercially, known for its sulfury aroma from esters and sulfur volatiles.
Durkee herbarium
Durkee Herbarium (GRI) is the Grinnell College herbarium in Grinnell, Iowa, holding about 27,000 vascular plant specimens from Iowa and adjacent states, with Henry S. Conard and Durkee among its important collectors.