Blue Ash Fraxinus Quadrangulata Kingdom: Plantae FEATURES Division: Magnoliophyta the Blue Ash Is Also Known As the Square-Stemmed Class: Magnoliopsida Ash

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blue ash Fraxinus quadrangulata Kingdom: Plantae FEATURES Division: Magnoliophyta The blue ash is also known as the square-stemmed Class: Magnoliopsida ash. This deciduous tree may attain a height of 70 Order: Scrophulariales feet with a trunk diameter of three feet. It has an irregular crown. Its square twigs are a distinctive Family: Oleaceae feature. The gray, scaly bark has diamond-shaped ILLINOIS STATUS furrows. The gray, hairy buds are rounded, up to one-half inch long. The pinnately compound leaves common, native are arranged opposite each other on the stem. Each © Guy Sternberg leaf has five to 11 leaflets. The leaflet is lance- shaped, pointed at the tip, about six inches long and about three inches wide. The leaflet is toothed along the edges, yellow-green and smooth on the upper surface, pale and with hair tufts on the lower surface. Small flowers are produced in branched clusters. The flower is purple with no petals. The oblong, winged fruit is notched at the tip, up to two inches long and one-half inch wide. The fruit has a single seed near the bottom. BEHAVIORS The blue ash may be found in the northern two- thirds of Illinois. It grows in moist woods and on wooded slopes and limestone cliffs. Flowering tree in summer occurs from March through April. The wood of this tree is used for flooring. Its inner bark produces a blue dye when placed in water, giving this plant its ILLINOIS RANGE common name. The leaflets turn yellow in the fall. fruits © Illinois Department of Natural Resources. 2021. Biodiversity of Illinois. Unless otherwise noted, photos and images © Illinois Department of Natural Resources. leaf bark Aquatic Habitats none Woodland Habitats upland deciduous forests Prairie and Edge Habitats none © Illinois Department of Natural Resources. 2021. Biodiversity of Illinois. Unless otherwise noted, photos and images © Illinois Department of Natural Resources..

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Cytogenetics of Fraxinus Mandshurica and F. Quadrangulata: Ploidy Determination and Rdna Analysis
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