3,306 articles
Thlaspi
Thlaspi L. is a small genus of Brassicaceae herbs native to temperate Eurasia, published by Linnaeus in 1753 with 9 accepted species; formerly broad Thlaspi s.l. was split into Noccaea, Microthlaspi, and other genera.
Thlaspi arvense
Thlaspi arvense, field pennycress or stinkweed, is a Eurasian mustard-family annual weed of cropland being domesticated in the US Midwest as a winter annual oilseed cash cover crop for corn-soybean rotations and aviation biofuel.
Thuja
Thuja (arborvitae) is a genus of five evergreen conifer species in Cupressaceae, disjunctly distributed between East Asia and North America; includes western redcedar (T. plicata) and eastern arborvitae (T. occidentalis).
Thuja occidentalis
Thuja occidentalis, northern white-cedar or arborvitae, is a slow-growing, long-lived (over 800 years) North American conifer valued for decay-resistant wood, deer winter browse, and ornamental cultivars.
Thuja plicata
Thuja plicata, western redcedar (also Pacific redcedar, giant arborvitae, canoe-cedar), is the only Thuja native to western North America, a large decay-resistant conifer from Alaska to California central to Northwest Coast Indigenous cultures and timber.
Thunbergia
Thunbergia (Acanthaceae, Thunbergioideae) is a genus of 100–150 twining Old World tropical plants named for Carl Peter Thunberg; includes ornamentals T. alata and T. laurifolia, medicinal rang jued, and invasive T. grandiflora.
Thyme
Thyme (Thymus spp., especially Thymus vulgaris) is a Mediterranean Lamiaceae herb used as a culinary seasoning and herbal medicine; thymol-rich essential oil, EU traditional-use status for productive cough, about 220 species.
Thymelaea
Thymelaea Mill. (Thymelaeaceae, Malvales): a genus of about 30 Mediterranean xerophyllous shrubs and herbs, sister to Daphne, type T. sanamunda, with daphnane diterpenes and dry fruits.
Thymelaeaceae
Thymelaeaceae (daphne family) is a Malvales family of about 46-50 genera and 890-900 species of trees and shrubs with fibrous bark, no stipules, and tubular flowers; includes Daphne, Aquilaria (agarwood), Gnidia, Pimelea.
Thymus pulegioides
Thymus pulegioides (large thyme, lemon thyme) is a European Lamiaceae subshrub of section Serpyllum, subsection Alternantes, chemically polymorphic with carvacrol, thymol, geraniol, and linalool chemotypes, used in traditional medicine.
Thymus serpyllum
Thymus serpyllum L. (wild thyme, breckland thyme, creeping thyme) is a mat-forming Lamiaceae subshrub native from Europe to western Siberia, used since antiquity for its thymol- and carvacrol-bearing essential oil and in traditional respiratory and gastrointestinal medicine.
Thymus vulgaris
Thymus vulgaris (common thyme, garden thyme) is a Mediterranean Lamiaceae subshrub used as a culinary herb and medicinal plant; six chemotypes, thymol-rich essential oil, EMA and European Pharmacopoeia monographs.
Tibouchina
Tibouchina (glorytree) is a Neotropical Melastomataceae genus, native S. Mexico to S. Tropical America, with 38 accepted species after the 2019 split into Pleroma, Chaetogastra, and Andesanthus; bee-pollinated, with T. herbacea invasive in Hawaii.
Tilia
Tilia (linden, lime, basswood) is a genus of about 33 accepted Malvaceae tree species native to the temperate Northern Hemisphere, with heart-shaped leaves and bracted flowers, valued for honey, carving wood, and top-rated urban UV reduction but drought- and salt-sensitive.
Tilia cordata
Tilia cordata Mill., small-leaved lime or littleleaf linden, is a Malvaceae tree native from Europe to Central Siberia and N. Iran, with heart-shaped 3–8 cm leaves, erect fragrant yellow flower clusters, insect pollination, 500-year lifespan, and IUCN least concern status.
Tilia platyphyllos
Tilia platyphyllos, large-leaved lime or bigleaf linden, a European Malvaceae tree up to 35 m; hexaploid 2n=82; parent of Tilia × europaea hybrid with T. cordata; nectar-rich flowers, IUCN Least Concern.
Tillandsia
Tillandsia, the air plants, is a genus of about 700 accepted species of usually epiphytic bromeliads native to tropical and subtropical America, absorbing water through leaf trichomes, using CAM photosynthesis, and including Spanish moss and the weevil-threatened T. utriculata.
Tinospora
Tinospora (qing niu dan shu, 青牛胆属) is a genus of about 34 Menispermaceae climbing vines of the Old World tropics; includes the medicinal species T. cordifolia (Giloy/Guduchi), T. crispa (makabuhay), and T. sinensis, distinguished by chemical markers and stem anatomy.
Tinospora cordifolia
Tinospora cordifolia (giloy, guduchi, heart-leaved moonseed) is an Ayurvedic medicinal liana of Menispermaceae native to the Indian subcontinent, used for diabetes, fever, and immunity, with documented alkaloids like berberine and a LiverTox score A for liver injury.
Tithonia
Tithonia (Mexican sunflower genus) is a genus of 12 Asteraceae species native from Arizona to Central America; T. rotundifolia is a garden ornamental and T. diversifolia a green manure and invasive weed.
Tithonia diversifolia
Tithonia diversifolia, known as the Mexican sunflower or tree marigold, is a yellow-flowered daisy-family shrub native to Mexico and Central America, used as medicine, forage, and green manure.
Toona
Toona is a small genus of deciduous trees in the mahogany family Meliaceae, native from China through tropical Asia to eastern Australia and grown for its light, fragrant red timber.
Toona ciliata
Toona ciliata, known as Australian red cedar or toon, is a large deciduous timber tree in the mahogany family, native from southern China to eastern Australia.
Topiary
Topiary: the art of clipping evergreen shrubs and trees, chiefly box and yew, into geometric or fanciful shapes; originated in imperial Rome, revived in Renaissance Italy, still practiced in gardens such as Levens Hall.
Torreya
Torreya, commonly stinking cedar or nutmeg yew, is a genus of six or seven evergreen conifer species in the yew family, native to eastern Asia and North America.
Torreya Guardians
Torreya Guardians: volunteer group founded 2004 by Connie Barlow, Paul S. Martin, and Lee Barnes that conducts assisted migration of the endangered Florida torreya (Torreya taxifolia) northward on private land, notably the 2008 Waynesville, NC planting.
Torreya taxifolia
Torreya taxifolia (Florida torreya, Florida nutmeg, stinking cedar) is a critically endangered yew-family conifer endemic to Apalachicola River bluffs in Florida and Georgia, reduced over 98% by fungal disease, chiefly Fusarium torreyae, to under 1,000 wild trees.
Tortellini
Tortellini: small ring-shaped stuffed egg pasta from Bologna and Modena in Emilia-Romagna, filled with pork loin, mortadella, prosciutto, Parmigiano and nutmeg, served in broth; official recipe registered in Bologna in 1974, distinct from larger cappelletti.
Tortilla
Tortilla: thin round flatbread of Mexican cuisine, corn (nixtamalized masa) or wheat flour; staple since after 300 BCE, base of tacos and burritos, now folic-acid fortified in California.
Tortilla chips
Tortilla chips: fried triangular snacks made from nixtamalized corn masa, popularized by Rebecca Webb Carranza in 1940s Los Angeles; base of nachos, a $2.5 billion U.S. retail category led by Frito-Lay.