Morphological characteristics
“Bitter ash treeâ€, also known as: eucalyptus, bitter eucalyptus, stone sandalwood, bitter tree, pot laurel, fan chicken wood, Qin wood, weighing star tree, large leafhopper, big leaf ash tree, ash. Deciduous trees, about 10 meters high. Bark grayish brown, relatively smooth, old and shallow; branchlets are also smooth, sparsely lenticels, broadly elliptic; buds short broad, densely brown tomentose. Pinnate, compound leaves, opposite; leaf axis smooth and glabrous; leaflets usually 5, rarely 3 or 7, rarely petiolules 5 to 15 mm, smooth and glabrous; leaf blade ovate, rarely long ovate or broadly ovate The top one is the largest, the length is 8 to 11 centimeters, the width is 4.5 to 6.5 centimeters, the base pair is the smallest, the length is 4 to 6 centimeters, the width is 3 to 4.5 centimeters, the apex is acuminate, the base is broadly wedge-shaped or slightly rounded, and the edges are Shallowly serrated, smooth on top, with brown pilose on both sides along the lower part of the midrib. Flowers and leaves open simultaneously, or slightly later than leaves, panicles originate from current year's branchlets apically and leaf axils; flowers small, calyx cupular, 4-lobed; corollaless; stamens 2, exserted; pistil 2, carpels connate, stigma 2-lobed . Samara is long, lanceolate, narrow or slightly wider, about 3 cm in length, and narrower or narrower at its tip. Flowering from May to June. Fruit period from August to September. Born in a sunny or broad-leaved forest hillside. Distribution Jilin, Liaoning, Hebei, Henan and other places.
The morphology of the "leaves of lobulars" is similar to that of the above species. The main differences are: small leaflets, ovate or round ovate,
Length 2 to 4 cm, width 1.5 to 2.5 cm, the next pair of leaflets is not smaller than the other leaflets, or tiny; leaves on both sides smooth and glabrous. Corolla, petal linear, pale green. Flowering in May. Fruit period in September. It grows on hillsides, sparse forests and ditches. Distribution of Liaoning, Jilin, Hebei, Henan, Inner Mongolia, Shaanxi, Shanxi, Sichuan and other places.
"Qinling ash tree" deciduous trees, up to 20 meters. Winter buds have rusty villi. Single pinnate, 7-7 leaflets, petiole very short; leaf blade ovate or oblong-lanceolate, 8-18 cm long, apex acuminate, base rounded or broadly cuneate, margin shallowly serrate, below The base or its base is rusty villi. Panicles grow, terminal; flowers white, large, 4-lobed; petal base linear, gradually apex expanded into spatulate; stamens and petals as tall. Sagittarius linear spoon-shaped, 2.5 to 3 cm long. Flowering in June. Born on a hillside or a ditch. Distribution of Sichuan, Hubei, Shaanxi and other places.
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