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Murraya paniculata is a tree that typically grows to a height of 7 m (23 ft) but often flowers and forms fruit as a shrub, and has smooth pale to whitish bark. It has pinnate leaves up to 170 mm (6.7 in) long with up to seven egg-shaped to elliptical or rhombus -shaped.
Maclura pomifera, commonly known as the Osage orange (/ ˈ oʊ s eɪ dʒ / OH-sayj), is a small deciduous tree or large shrub, native to the south-central United States.It typically grows about 8 to 15 metres (30–50 ft) tall.
Philadelphus (/ ˌ f ɪ l ə ˈ d ɛ l f ə s / [2]) (mock-orange) is a genus of about 60 species of shrubs from 3–20 ft (1–6 m) tall, native to North America, Central America, Asia and (locally) in southeast Europe.
It is native to northern China and Korea, and is also known as the Japanese bitter-orange (karatachi), [4] hardy orange [5] or Chinese bitter orange. The plant is a fairly cold-hardy citrus ( USDA zone 6) and will tolerate moderate frost and snow, making a large shrub or small tree 4–8 m (13–26 ft) tall.
The false orange lacks the thorns typical of the Citrus genus, a difference often seen on islands without indigenous herbivores. [1] Species include: [2] [3] Citrus oxanthera — orange flower oxanthera; Citrus neocaledonica — large-leaf oxanthera; Citrus undulata — wavy-leaf oxanthera; Oxanthera brevipes [4] (status pending)
Elaeagnus umbellata grows as a deciduous shrub or small tree, typically up to 3.5 metres (11 ft) tall, with a dense crown. [5] [6] It commonly bears sharp thorns in the form of spur branches. [6] Flowers are fragrant, occur in clusters of white to yellow, are 8–9 mm in length and 7 mm in diameter, and have four lobes. [5] [6]
The thorns are easily able to puncture human skin, and when successful, the piercing causes a slight inflammation and severe pain. Their dense thorny structure makes them particularly valued in situations where an impenetrable barrier is required.
Ziziphus spina-christi, known as the Christ's thorn jujube, is an evergreen tree or plant native to the Levant, East Africa, and Mesopotamia. [3] Fruit and leaves from the tree were used in preparing ancient Egyptian foods, in cultural practices, and in skincare routines - especially with qasil powder derived from the Ziziphus spina-christi tree leaves.