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Blue ash is a medium sized deciduous tree typically reaching a height of 10–25 m (33–82 ft) with a trunk 50–100 cm (20–39 in) in diameter. The twigs typically have four corky ridges, a distinctive feature giving them a square appearance (in cross-section), hence the species name, quadrangulata, meaning four-angled.
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.
Eucalyptus oreades, commonly known as the Blue Mountains ash, white ash or smooth-barked mountain ash, [2] is a species of medium-sized to tall tree that is native to eastern Australia. It has smooth, powdery whitish bark with rough bark near the base, lance-shaped to curved adult leaves, flower buds in groups of seven, white flowers and cup ...
Ash – Fraxinus spp. Black ash – Acer negundo, Fraxinus nigra; Blue ash – Fraxinus quadrangulata; Cane ash – Fraxinus americana; European ash – Fraxinus excelsior [1] Green ash – Fraxinus pennsylvanica lanceolata; Maple ash – Acer negundo; Red ash – Fraxinus pennsylvanica lanceolata; River ash – Fraxinus pennsylvanica
white ash Oleaceae (olive family) 541 Fraxinus angustifolia: narrow-leafed ash Oleaceae (olive family) Fraxinus caroliniana: Carolina ash Oleaceae (olive family) 548 Fraxinus excelsior: European ash Oleaceae (olive family) Fraxinus latifolia: Oregon ash Oleaceae (olive family) 542 Fraxinus nigra: black ash Oleaceae (olive family) 543 Fraxinus ornus
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]
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Fraxinus latifolia is a medium-sized deciduous tree that can grow to heights of 20–25 metres (65–80 feet) in height, with a trunk diameter of 40–75 centimetres (16–30 inches) in its 100−150-year average life span. [4]