First, the difference between ash and ash:
Fraxinus mandshurica, also known as Fraxinus americana, is a deciduous tree of Fraxinus. The two are quite similar, and there are three differences, all of which are subtle: First, the results are different. Samara of Fraxinus mandshurica, wings longer than seeds or nearly as long; The samara of Fraxinus mandshurica has wings shorter than seeds. Second, the leaves are different. The pinnate compound leaves of Fraxinus mandshurica have 7 ~ 9 leaflets, the petiole base is not enlarged, and the leaves are thin; The pinnate compound leaves of Fraxinus mandshurica have 5 ~ 7 leaflets, the petiole base is saccate and the leaves are wide. Third, inflorescences are different. The inflorescence of Fraxinus mandshurica was born on the last branch, and the inflorescence of Fraxinus mandshurica was born on the last branch.
Second, the difference between ash and ash
In the garden industry, there are two varieties of ash tree (Grifola frondosa for short) and Grifola frondosa for festivals. Many people don't know the difference between these two seedlings. Today, the ecological park will give you a popular science lesson. ?
1. Plant genus: Fraxinus of Oleaceae, also known as Fraxinus. ?
2. Appearance:
(1) to save ash? Vegetative branches are usually prickly. Odd-pinnate compound leaves with narrow wings on leaf axis, 7-9 leaflets (1 1), leathery. Flowers are mixed, dense into short thyrses, and the flowering period is April-May. The fruiting period is September. ?
② ash tree? The crown is oval and the bark is yellow-brown. Branchlets are smooth and hairless. Odd-pinnate compound leaves, opposite, 5-9 leaflets, usually 7 leaflets, ovoid or ovate-lanceolate, 3- 10 cm long, tapering at the top, narrow and asymmetrical at the base, with teeth and wavy teeth at the edge, glabrous on the surface, and pubescent on the back along the veins. Panicle is extremely born or terminal on the branch of the current year, large and loose; The elliptic inflorescence is terminal and lateral, drooping and flowering in summer. Calyx campanulate; No petals. Samara oblanceolate, 3-4 cm long. Flowering from March to May; /kloc-The fruit ripens in October. Samara is flat-lanced?
Ash tree, height 19 m, DBH 1.5 m. Vegetative branches are usually prickly. Odd-pinnate compound leaves with narrow wings on leaf axis, 7-9 leaflets (1 1), leathery. Flowers are mixed, dense into short thyrses, and the flowering period is April-May. The fruiting period is September. Light-loving, slightly cold-resistant, drought-resistant, barren-resistant and adaptable. Produced in China, Hubei and other places, cultivated in Beijing and other places. Sow and breed. Street trees, shade trees. ?
3. Growing environment?
(1) to save ash? Like light, but also a little shade-tolerant, like mild and humid climate and soil layer, less pests and diseases, strong germination ability and strong adaptability. The extreme minimum temperature is -20.3℃, and the maximum temperature is 42.3℃, which has no adverse reaction and is easy for molding and processing. This tree species has strong germination ability, resistance to leaf picking and pruning, and can adapt to both root raising and paw exposure and flooding fertilization, and its compound leaves are easy to form a crown that meets the requirements. ?
② ash tree? Like light, a little cloudy, like warm and humid climate, quite cold-resistant, like wet and waterlogging, but also drought-resistant. ?
4. Value?
(1) to save ash? It has greening value and ornamental value. ? Tall deciduous trees, with prickly lateral branches and egg-shaped lanceolate leaflets, are good garden ornamental trees, which can form special landscapes through group planting or single planting. It can also be used to make bonsai or as a hedge. Excellent material, is a precious timber tree species. ?
(2) Fraxinus mandshurica is a good street tree and shade tree, with straight trunk, lush and bright leaves and orange autumn leaves; Can be used for greening. At the same time, it also has medicinal value in treating malaria, irregular menstruation and children's head sore.
Upload a photo of ash for reference only.