Rowan leaf: shape, description, structure and photo. How does the mountain ash leaf look like in summer and autumn?

Admiring the curly crown of beautiful mountain ash, many do not suspect that in nature there are 84 species of this plant, supplemented by a considerable number of hybrid forms. Rybina settled on the Northern Hemisphere, having mastered his temperate belt. In the Russian expanses, 34 species grow, some of which are cultivated and used as a decorative shrub.

The species differ significantly from each other. Coloring of berries and bark, a sheet of mountain ash and other signs of each variety. There are very few true mountain ash in the forest, they are rare. Basically, the unique beauty of a man pleases rowan youth - miniature deciduous trees with a height of 3-6 meters. The most common and known type of shrub trees is the mountain ash.

Rowan leaves which are: complex or simple?

The shape of the leaves of the mountain ash is diverse. When you look at the leaves from different trees, you involuntarily ask yourself: "Is the mountain ash leaf complex or simple?" According to biologists, there are complex, odd-numbered, and simple rowan leaves. Actually, the structure of the leaves determines the division of shrubs into two main subgenus.

To the present mountain ash trees are listed with pinnate leaves, forming openwork crowns. The trees of the second subgenus, due to simple whole, dentate-lobate and lobate leaves, are distinguished by fairly dense crowns.

The value of real mountain ash is higher. On most of them, edible curative bitter-sweet berries ripen. Regardless of how the ashberry leaf looks, all kinds of trees are widely used in landscape design for the arrangement of all kinds of garden and park sites. The bushes are magnificent as soloists, they look great in group arrangements and regular alleys.

After all, in decorating the tree successfully competes with competitors (which, by the way, a little), taking away the palm tree of primacy in individual plants. It is beautiful in any season. And when he glitters the open spring foliage. And when the white bubble of inflorescence shines. And when it burns with a bright fire of leaves, touched by the autumn purple, the fiery red clusters of tart berries, especially priporoshennyh first snowball.

Biological description of ashberry leaf

In the spring, when the ashberry buds were just about to blossom, it's difficult to say what the bush is in front of us. Well recognizable is the tree, whose leaves are completely unfolded. After all, each sign of the original sheet of ashberry. Whether it was a picture, a picture, but they saw everything. They admired them more than once in a park, a forest or a garden.

The common petiole is covered with a lot of large, cirrus small leaves. The construction scheme of each is elementary. It is made up of several pairs of miniature leaves. Its top is formed by an unpaired single leaf. Various sources give a more accurate description of the leaf of the mountain ash - the plant from the family Rosaceae.

The length of non-panopersyllabic leaves reaches 10-20 centimeters. The long thin reddish petiole is lined with 7-15 almost sessile broadly lanceolate or elongated, pointed, marginal to the edge, miniature leaves (3-5 cm long), entire on the lower end and sharply pointed at the apex.

Rowberry leaves in spring and summer

In spring, the leaves are clearly visible thick fuzz. They are covered with hairs from above and below. By the summer the hairs will fall off, the gentle fluff will disappear, exposing the surface, just like it happens in other trees, for example, in aspen. A fluff of hairs prevents the rapid evaporation of the liquid that saturates the young, fragile leaf blades.

In summer, usually matte, leathery and rough leaves, painted on top in dull-green tones, the felt gray bottom gleams with pale bluish tints, almost approximated to white-silvery color.

Rowan leaves in autumn

Green in summer, ashberry leaves fall through three stages of staining. Yellow in the beginning, they gradually acquire shades of orange (from light to intense). And in the end they are painted in a crimson color palette. The autumn crown of the plant glows with golden, orange and terracotta tones.

Foliage, obsolete, begins to fall. But the mountain ash does not lose solid leaves (unlike many other trees and shrubs). From the pinnate sheet one by one the components are showered. He, losing miniature leaves one after another, as if falling apart into separate parts.

The petall of the huge leaf gradually disappears. And only bare completely, the main brick-red vein part with the plant, flying away from him in the last turn.

Foliage of unusual mountain ash

When they talk about the elegance of a tree, the charms of its bunches and the unusual azhure of crowns, they usually mean ordinary mountain ash. However, the world abounds with other magnificent species of mountain ash, although they are much less common.

Types of solid-leaved ryabin have unique biological features that make their decorativeness very attractive. The beauty of their integral, often pubescent leaves deserves special attention.

Rowan Aria

An unusual whole-leafed tree was stained by West European rare-growth forests. It, ascending skyward by 10-12 m, spreads its magnificent crown in breadth for 6-8 m.

The shape of the ashberry leaf is similar to those that sprinkle alder branches. It is one-piece, round-elliptical, leathery, with pointed or blunt apex, sharp-bifacial at the edges, reaches 14 x 9 cm. Its top is juicy-green in summer, and the bottom is white-felt, grayish, as if powdered with flour.

Therefore, in Russian it is called powdery mountain ash. The tree, gleaming with silvery foliage shimmering from the whiff of the breeze, effectively contrasts with the mottled background formed by the surrounding plants.

It is interesting then, what color are the leaves of mountain ash in autumn? In Aria, the autumn foliage is painted in a special way. Its immense crown with the onset of autumn shines with gorgeous bronze shades.

Rowan Intermediate

This species, often called the Swedish mountain ash, is represented by single, slender trees 10-15 meters high, wild in the Central European, Baltic and Scandinavian forests. A single sheet of mountain ash, the photo of which is filmed by professionals and amateurs, is very thin.

At the top in summer it is dark green, below it is pubescent with gray hairs, in autumn reddish shades. The form is not deep-slanted, on average twelve-centimeter whole leaves oblong-ovoid. Decorative silvery foliage forms the original oval crown around the smooth grayish trunk.

Rowan

Brooches scattered over the undergrowth and independent thickets of rowan buzinolistnaya settled in the open spaces of the Khabarovsk Territory, Kamchatka and Sakhalin. They captured the Okhotsk coast, the Kuriles and penetrated into Japan. Shrub trees differ relatively low height (up to two and a half meters), straight nude darkish-brown with a bluish scurf in offspring, a round-ovoid-drained crown.

In gray branches with clearly marked lenticles, 18-centimeter leaves are incompletely pitted. The petioles of the terracotta range are lined with oval-lanceolate sharp-leafed leaves, almost nude, glossy dark green. Their number varies from 7 to 15.

Rowan Köne and Vilmorena

These original straight-stemmed trees are representatives of the Chinese flora. For habitation, they have chosen the forests covering the temperate and warm zones in Central China. Vilmorena differs from Kyone with a higher height (the first to 6 m, the second - up to 3 m) and the ornamentality of the crown.

Crowns of plants are sprinkled with paranoid leaves. On 20-centimeter petioles there are 12-25 leaves, the edges of which are sharply serrate from the top to the base. The seasonal rhythm of these plants is very close. The autumn leaf of the mountain ash is painted in purple, red-violet colors.

Foliage of mountain ash of Glogovin

The medical lake (the second name of the plant) will be found in the Caucasus and Crimea. It captured part of the Ukrainian lands, those that stretched in the south-west of the country. Its natural range extends across Western Europe and Asia Minor. Single trees and compact groups now and again come across in undergrowth and shrub thickets, in the second tier of forest tracts and on sunny slopes.

Slender 25-meter high mountain ash covered with rounded crowns. Offsprings poured olive shades. Relict trees are dark gray, fissured. Possessing a long (up to 17 centimeters) plate, the rowan leaf is simple, broadly ovoid.

The plate at the base is round-heart-shaped, and its tip is pointed. It has small-toothed edges, it is equipped with 3-5 acute lobes. Its top is glossy, dark green, and the bottom is hairy-pubescent. The autumn palette of leaf blades varies from yellow to orange.

There are two types of Glogovina: peristorassechennaya and with pubescence. From both of them form magnificent solo, group and alleys plantations.

Rowan cherry

Primorye, Japan, Korea, and China affected scattered and grouped trees with narrow pyramidal crowns of mountain ash. They dispersed over broad-leaved and cedar woodlands. Straight glossy dark brown trunks, looking into the sky, reach a height of 18 meters.

The distinctive features of leaves are simple, broadly oval, sharply serrate, distinctly expressed venation, in the length of a dense leaf blade not exceeding 10 cm. Their outlines are similar to alder leaves. Hence the name of the tree.

Spring light green leaf of mountain ash casts slightly bronze. In the summer leaf the lower surface is yellowish, and the upper one is intense dark green. Autumn shines with juicy bright orange hues. Especially beautiful is the tree at the time of spring flowering and autumn leaf fall.