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European ash in flower Narrow-leafed ash (Fraxinus angustifolia) shoot with leaves. Fraxinus (/ ˈ f r æ k s ɪ n ə s /), commonly called ash, is a genus of plants in the olive and lilac family, Oleaceae, [4] and comprises 45–65 species of usually medium-to-large trees, most of which are deciduous trees, although some subtropical species are evergreen trees.
In mid to late spring, the tree produces small flowers that are not very noticeable. It is dioecious; it requires two separate plants (male and female) to successfully pollinate and reproduce. The fruit, produced by female trees, is a cluster of samaras, 3–5 cm (1 + 1 ⁄ 8 –2 in) long that includes wings similar to maple trees. It is ...
Fraxinus angustifolia subsp. angustifolia has become a weed in many parts of Australia, where it is known as Desert Ash. It has been widely planted as a street and park tree, and has spread to native bushland and grasslands, as well as stream banks and drainage lines, out-competing native plants for moisture, light and nutrients. [7] [8]
Male flowers Seeds of Fraxinus excelsior, popularly known as "keys" or "helicopter seeds", are a type of fruit known as a samara. It is a large deciduous tree growing to 12–18 m (39–59 ft) (exceptionally to 43 m or 141 ft) tall with a trunk up to 2 m (6.6 ft) (exceptionally to 3.5 m or 11 ft) diameter, with a tall, narrow crown. [2]
Where to Plant Mountain Ash Grown with a single trunk, it’s a good choice for a small specimen tree. It usually tops out between 15 and 20 feet tall, so it works well in smaller landscapes .
The specific epithet uhdei refers to Carl Uhde, a German plant collector who explored Mexico in the 1840s. [7] Fraxinus uhdei is locally known as fresno blanco in Spanish; other English vernacular names include Hawaiian ash and Mexican ash. [3] The name Shamel ash refers to Archie Shamel, who introduced the trees to California in the 1920s. [7]
The flowers are purple, produced in small clusters in early spring; like all ashes, the Texas ash is dioecious, with male and female flowers on separate trees. The fruit is a samara 1.5–3 cm long, with an apical wing. It is long-lived and drought tolerant. [4]
The flowers are produced in small clusters in early spring; it is dioecious, with male and female flowers on separate trees. The fruit is a samara 1.5–3 cm long, with an apical wing 4–8 mm broad. [2] [3]