881 articles
Willow
Willow (Salix, Salicaceae): about 450 dioecious, catkin-bearing tree and shrub species of northern temperate riparian zones, polyploid (2n=38-224), chemically rich in salicinoids, invasive in the Southern Hemisphere, and widely used for bioenergy, restoration, and phytoremediation.
Willow (disambiguation)
Willow (disambiguation): the genus Salix (350-450 willow species), named species such as weeping, white, black, and crack willow, willow bark medicine and aspirin, shrub willow bioenergy, Willowpedia, and the UK National Willow Collection.
Wisteria
Wisteria, also called wistaria, is a genus of about five to seven deciduous twining vine species in Fabaceae, including Chinese Wisteria sinensis, Japanese W. floribunda, and native American W. frutescens, known for long fragrant flower racemes and the invasiveness of the Asian species in the US.
Wood
Wood (secondary xylem) is the structural tissue trees form via the vascular cambium; used as fuel, timber, and paper feedstock. Key facts: Kalambo Falls 476,000-year-old structure, 3,905 million m³ roundwood in 2024, orthotropic mechanics.
Yuzu (柚子)
Yuzu (柚子, Citrus × junos) is an aromatic acid citrus hybrid from the upper Yangtze, grown mainly in Japan and Korea and used for its fragrant peel and sour juice in ponzu, garnishes, and yuzu baths.
Zapoteca
Zapoteca (white stickpea) is a genus of about 22 species of mimosoid legume shrubs in Fabaceae, native from the southwestern USA to northern Argentina, segregated from Calliandra by 16-grained pollen polyads and chromosome number 13.
Ziziphus mauritiana
Ziziphus mauritiana (Indian jujube, ber, Chinee apple) is a spiny Rhamnaceae tree to 15 m native from Sahel Africa to Australia, grown for edible red drupes, drought tolerant, IUCN Least Concern, but an invasive thicket-forming weed in northern Australia.
Ziziphus mistol
Ziziphus mistol (mistol; accepted name Sarcomphalus mistol) is a spiny Chaco fruit tree of Peru, Bolivia, Paraguay, and Argentina, with sweet 1.5 cm drupes used in bolanchao, arrope, and folk medicine; flavonoid-rich, IUCN Data Deficient.
Ziziphus spina-christi
Ziziphus spina-christi, the Christ's thorn jujube or sidr, is a spiny Rhamnaceae tree native from Mauritania to Pakistan, cold-limited, drought-hardy, and used for food, fodder, timber, and traditional medicine.
Zygophyllaceae
Zygophyllaceae R.Br., the creosote-bush family, is an order-level family (Zygophyllales) of arid-adapted trees, shrubs, and herbs with about 20 to 27 genera and 200 to 285 species, sister to Krameriaceae, including Zygophyllum, Guaiacum, Tribulus, and Larrea.
Zygophyllum
Zygophyllum L. (synonym Tetraena in part) is a genus of about 128 accepted succulent shrubs in Zygophyllaceae, native from Macaronesia and Africa to Mongolia, India, Mexico, and Chile, adapted to drought and salinity and used in traditional medicine.