2,112 articles
Succulent plant
Succulent plants, or succulents, are plants that store water in leaves, stems, or roots to survive drought; the trait occurs across many plant families, mostly with water-efficient CAM photosynthesis.
Sumac
Sumac: ground spice from Rhus coriaria (Arabic summāq, dark red), a purple sour Mediterranean seasoning; also the Rhus genus (~150 species), distinct from poisonous Toxicodendron vernix (poison sumac), which causes urushiol dermatitis.
Sunflower oil
Sunflower oil, also called sunflower seed oil, is the vegetable oil pressed from sunflower seeds, making up about 9 percent of global vegetable oil production.
Sweet pea
Sweet pea (Lathyrus odoratus) is a scented annual climbing legume native to Sicily and southern Italy, introduced to Britain around 1691–1699, grown for fragrant cut flowers; Grandiflora and Spencer cultivar types; toxic seeds.
Swertia
Swertia L. is a genus of about 170 gentian-family herbs native from subarctic Northern Hemisphere to Old World tropical mountains, with xanthone- and iridoid-rich species such as S. chirayita used in Asian traditional medicine.
Swietenia
Swietenia (mahogany genus, Meliaceae) is a New World genus of three species, S. mahagoni, S. macrophylla, and S. humilis, plus hybrid S. x aubrevilleana, native from Mexico to Bolivia and Florida to the Caribbean, source of true mahogany timber, CITES-listed.
Swietenia macrophylla
Swietenia macrophylla, known as big-leaf or Honduran mahogany (caoba), is a large tropical tree of the mahogany family native from Mexico to Bolivia, prized for its valuable timber.
Symphonia
Symphonia L.f. (Clusiaceae, Malpighiales) is a genus of tropical trees with 16 accepted species native to Mexico to Tropical America, tropical Africa, and Madagascar; best known for Symphonia globulifera, a pantropical timber and gum tree with pore-like stigmas and bird pollination.
Symphoricarpos
Symphoricarpos (snowberry), Caprifoliaceae genus of about 15 deciduous shrub species native to North America and central-southern China, grown for white to purplish drupes; type S. orbiculatus, published by Duhamel 1755.
Symphoricarpos albus
Symphoricarpos albus (L.) S.F.Blake, the common snowberry, is a suckering deciduous shrub in the honeysuckle family, native across North America to Baja California, with pink flowers and waxy white berries lasting into winter.
Symphytum
Symphytum (comfrey), Boraginaceae genus of about 34-40 perennial herbs native to Europe and W. Asia; knitbone topical remedy for sprains and bruises, but contains hepatotoxic pyrrolizidine alkaloids limiting use.
Symplocaceae
Symplocaceae (sweetleaf family), Ericales, two genera Cordyloblaste and Symplocos, c. 300–320 woody species disjunct between eastern Asia and the Americas; Eurasian origin c. 52 Ma, revised 2008 classification.
Symplocos
Symplocos (sweetleaf) is a genus of about 300-411 accepted species of trees and shrubs in Symplocaceae, Ericales, native from Asia to the Pacific and the Americas, absent from Africa; leaves dry yellow from aluminium accumulation, fruits often blue.
Synsepalum dulcificum
Synsepalum dulcificum, the miracle fruit or miracle berry (神秘果), a West African Sapotaceae shrub whose glycoprotein miraculin binds hT1R2-hT1R3 and makes sour foods taste sweet for 1-2 hours; EU-authorized novel food at 0.7 g/day.
Syringa vulgaris
Syringa vulgaris, the common lilac (Oleaceae), is a deciduous shrub native to the Balkan mountains, with fragrant spring panicles, over 1,600 cultivars, and a breeding history from Lemoine's 1870s French hybrids onward.
Syzygium
Syzygium (Myrtaceae), the world's most species-rich tree genus with over 1100 species, Old World tropics, origin in Australia-New Guinea; includes clove (S. aromaticum) and jambolan (S. cumini).
Syzygium cumini
Syzygium cumini (jambolan, Java plum, jamun) is a Myrtaceae evergreen tree native from tropical Asia to north Queensland, grown for dark purple astringent fruit, used in traditional medicine, and invasive in south Florida.
Tabebuia
Tabebuia Gomes ex DC. is a genus of 74 accepted Bignoniaceae trees native from Mexico to tropical America; once broadly circumscribed, it was split in 2007 into Tabebuia, Handroanthus, and Roseodendron.
Tabernaemontana
Tabernaemontana Plum. ex L. is a pantropical genus of about 100–126 alkaloid-rich shrubs and trees in Apocynaceae, first published in 1753; not to be confused with Amsonia tabernaemontana or Schoenoplectus tabernaemontani.
Tabernaemontana divaricata
Tabernaemontana divaricata, crepe jasmine or pinwheel flower, an Apocynaceae shrub native from the Himalayas to Indo-China, cultivated for fragrant pinwheel flowers, containing 66 reported alkaloids, IUCN least concern.
Tabernanthe iboga
Tabernanthe iboga (iboga) is a Central African Apocynaceae shrub, Bwiti sacrament in Gabon, source of ibogaine (~0.3% of root bark), IUCN Least Concern but threatened by overharvesting; Gabon banned wild export in 2019.
Tagetes
Tagetes, the marigold genus of Asteraceae, about 50 aromatic herb species native to subtropical America; French and African marigolds are Mexican in origin and roots contain nematicidal thiophenes.
Tagetes erecta
Tagetes erecta (cempasúchil, African marigold) is a Mexican annual Asteraceae, the Day of the Dead flower and the world's main lutein source, with dried flowers containing 0.1–0.2% carotenoids, 80% lutein diesters.
Talinum
Talinum Adans. (fameflower) is a genus of about 28 accepted species of fleshy herbs in Talinaceae, Caryophyllales, native to the tropics and subtropics; includes waterleaf (T. fruticosum) and Javanese ginseng (T. paniculatum).
Tamaricaceae
Tamaricaceae, the tamarix family, is a Caryophyllales family of halophytic shrubs and small trees with scale-like leaves and capsular fruit. Four accepted genera, Myricaria, Myrtama, Reaumuria, and Tamarix; sister to Frankeniaceae; Tamarix has about 70 species.
Tamarind
Tamarind (Tamarindus indica, Arabic tamr hindi, "Indian date") is a Fabaceae tree native to tropical Africa and Madagascar, grown tropically for acidic pod pulp used in curries, drinks, and confectionery; India is the largest producer.
Tamarix
Tamarix (tamarisk, saltcedar) is a genus of salt-tolerant shrubs and small trees in Tamaricaceae, native from Africa and the Mediterranean to Asia, with scale-like salt-secreting leaves; several species are invasive riparian weeds in the western United States.
Tamarix gallica
Tamarix gallica (French tamarisk), Mediterranean-Sahara shrub or tree of Tamaricaceae with salt-excreting scale-like leaves; salt-tolerant and arsenic-tolerant halophyte, ornamental and windbreak, invasive in California and listed as a noxious weed.
Tanacetum
Tanacetum (tansy genus) is a 134-160 species Asteraceae genus of temperate Eurasia, NW Africa, and North America, including common tansy, feverfew, and pyrethrum daisy, source of pyrethrin insecticides.
Tanacetum parthenium
Feverfew (Tanacetum parthenium, formerly Chrysanthemum parthenium) is an aromatic Asteraceae herb native from southeast Europe to the western Himalaya, traditionally used against fever and migraine; parthenolide is its key constituent, with mixed clinical evidence for migraine prevention.