Walnut trees are any species of tree in the plant genus Juglans, the type genus of the family Juglandaceae, the seeds of which are referred to as walnuts. All species are deciduous trees, 10–40 metres (33–131 ft) tall, with pinnate leaves 200–900 millimetres (7.9–35.4 in), with 5–25 leaflets; the shoots have chambered pith, a character shared with the wingnuts (Pterocarya), but not the hickories (Carya) in the same family.
The pecan is a species of hickory native to the southern United States and northern Mexico in the region of the Mississippi River. The tree is cultivated for its seed in the southern United States, primarily in Georgia, New Mexico, Texas, and Mexico, which produces nearly half of the world total. The seed is an edible nut used as a snack and in various recipes, such as praline candy and pecan pie. The pecan, in various aspects, is included in state symbols of Alabama, Arkansas, California, Oklahoma, and Texas.
The Juglandaceae are a plant family known as the walnut family. They are trees, or sometimes shrubs, in the order Fagales. Members of this family are native to the Americas, Eurasia, and Southeast Asia.
Engelhardia is a genus of seven species of trees in the family Juglandaceae, native to southeast Asia from northern India east to Taiwan, Indonesia and the Philippines. The genus name is commonly misspelled "Engelhardtia", a "correction" made by the original author Carl Ludwig Blume in 1829 and persistent until today, as it was thus entered in the Index Kewensis; the original spelling is Engelhardia.
Hickory is a common name for trees composing the genus Carya, which includes around 18 species. Five or six species are native to China, Indochina, and India (Assam), as many as twelve are native to the United States, four are found in Mexico, and two to four are native to Canada. A number of hickory species are used for products like edible nuts or wood.
The hazel (Corylus) is a genus of deciduous trees and large shrubs native to the temperate Northern Hemisphere. The genus is usually placed in the birch family Betulaceae, though some botanists split the hazels into a separate family Corylaceae. The fruit of the hazel is the hazelnut.
Pterocarya, often called wingnuts in English, are trees in the walnut family Juglandaceae. They are native to Asia. The botanic name is from Ancient Greek πτερον (pteron) "wing" + κάρυον (karyon) "nut".
Cunninghamia is a genus of one or two living species of evergreen coniferous trees in the cypress family Cupressaceae. They are native to China, northern Vietnam and Laos, and perhaps also Cambodia. They may reach 50 m (160 ft) in height. In vernacular use, it is most often known as Cunninghamia, but is also sometimes called "China-fir". The genus name Cunninghamia honours Dr. James Cunningham, a British doctor who introduced this species into cultivation in 1702 and botanist Allan Cunningham.
Eucommia ulmoides is a species of small tree native to China. It belongs to the monotypic family Eucommiaceae. It is considered vulnerable in the wild, but is widely cultivated in China for its bark and is highly valued in herbology such as traditional Chinese medicine.
Annamocarya is a genus of flowering plants in the family Juglandaceae, containing only one species, Annamocarya sinensis, native to southwestern China and northern Vietnam. It is related to the hickories, and was formerly included in the same genus Carya, as Carya sinensis, but also shares a number of characteristics with the walnuts in the genus Juglans. It is grouped with Carya in the subtribe Caryinae. It is sometimes called Chinese hickory or beaked hickory.
Alfaroa is a genus of evergreen trees in the Juglandaceae family of the Fagales, growing in montaine and submontaine tropical rain forests in Central America. The wood is characterized by solid pith, pink heartwood, and vessels with scalariform perforations, as well as simple perforations.
Oreomunnea pterocarpa, known locally as gavilán or gavilán blanco, is a species of Oreomunnea in the family Juglandaceae. It is found in Costa Rica, southeastern Mexico (Chiapas), and Panama.
Oreomunnea is a genus of two species of flowering plants in the family Juglandaceae, native to southern Mexico and Central America, where they occur in montane rainforest.
Pterocarya fraxinifolia is a species of tree in the Juglandaceae family. It is commonly known as the Caucasian wingnut or Caucasian walnut. It is native to the Caucasian region Armenia, Azerbaijan, Georgia, Iran, Russia, Ukraine and Turkey. It was introduced to France in 1784, and to Great Britain after 1800.
Cyclocarya is a genus of flowering plants in the family Juglandaceae, comprising a single species Cyclocarya paliurus, formerly treated in the genus Pterocarya as Pterocarya paliurus. It is native to eastern and central China.
Platycarya is a genus of flowering plants in the family Juglandaceae, usually treated as comprising a single species Platycarya strobilacea, though one to two additional species are accepted by some authors. It is native to eastern Asia in China, Korea, and Japan.
Alfaroa costaricensis, also known as campano chile, chiciscua, gaulin, gavilán Colorado, or gavilancillo, is nut bearing timber tree in the Juglandaceae family. It is native to the Neotropics, from Mexico, through Central America to Colombia.
Engelhardia roxburghiana is a tree in the family Juglandaceae. It is named for the Scottish botanist William Roxburgh.
Lasjia grandis, also known as the satin silky oak or Barong nut, is a species of forest tree in the protea family that is endemic to north-eastern Queensland, Australia. Its conservation status is considered to be Vulnerable under Queensland's Nature Conservation Act 1992.
Megaxyela is a genus of sawflies in the family Xyelidae. There are about 13 described species in Megaxyela, found in the eastern Nearctic and in the southeastern part of East Asia. Two fossil species have been discovered, in Colorado and Shandong, China.
