Rowan Leaf: shape, description, structure and photo.

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Admiring curly crown of the beautiful mountain ash, many are not aware that in nature there are 84 species of this plant, complemented by a considerable number of hybrid forms.Rowan settled on the Northern Hemisphere temperate zone mastered it.On the Russian space grows 34 species, some of which civilize and used as an ornamental shrub.

Species differ greatly from each other.Coloration of berries and bark, leaf mountain ash and other signs of each species of their own.Real rowan trees in forest areas quite a bit, they are rare.Basically, the unique beauty of the human pleases Rowan undergrowth - miniature deciduous tree height of 3-6 meters.The most common and known species of trees-shrubs recognized mountain ash.

Rowan leaves have: sophisticated or simple?

form of leaves, rowan diverse.When you look at the leaves from different trees, involuntarily ask yourself: "Rowan Leaf complex or simple?"According to biologists, there are compound, imparipinnate, and simple rowan leaves.In fact, the structure of the leaves is caused by the division of the bush and on the two main subgenus.

To this ranked Rowan trees with pinnate leaves, forming a delicate crown.Trees second subgenus, with simple one-piece, blade and rack-lobed leaves, differ quite heavy cover.

rowan above this value.On most of them mature edible medicinal bitter-sweet berries.No matter what it looks like a sheet of ash, all kinds of trees are widely used in landscape design in the regeneration of various garden and park areas.Shrubs are great as tapeworms, they look perfectly in group arrangements and regular malls.

After all, decorative tree successfully compete with competitors (who, by the way, a little bit), taking away the palm from individual plants.It is beautiful in any season.And when spring foliage tracery gleamed.And when the boiling shines white inflorescences.And when the fire burns bright foliage intact autumn crimson, fiery-red clusters of tart berries, especially the first powdered snow.

biological description Rowan leaf

In spring, when the buds rowan just set out to be dismissed, the move is difficult to say what the bush in front of us.Well recognizable that tree whose leaves are completely unfolded.For each original sheet sign Rowan.Photos whether his drawing there, but they saw it all.We admire it more than once in the park, forest or garden.

total petiole plastered many large pinnate leaves small.The circuit construction of each unit.It is made up of several pairs of tiny leaves.Its apex is framed unpaired individual leaf.Different sources give a more precise description of the leaf of mountain ash - plant of the family Rosaceae.

imparipinnately leaf length reaches 10-20 centimeters.Long thin reddish petiole 7-15 studded with almost sessile or broadly elongated, pointed, serrated on the edge, tiny leaves (3-5 cm), entire lower end and sharply serrated at vershinki.

Rowan leaves in spring and summer

spring on the leaves clearly visible dense fuzz.They are covered with hairs from above and from below.By the summer of hair fall off, the gentle fuzz disappears, exposing the surface, just as it does with other trees, such as aspen.Fluff out hair prevents rapid evaporation of the liquid, saturating the young immature leaf blades.

In the summer, usually dull, rough and leathery leaves, painted from top to dull green tones, gray felt bottom shines pale bluish, almost approximate to the white and silver color.

Rowan leaves in autumn

green in summer, autumn leaves of mountain ash are three stages coloring.Yellow first, they gradually become shades of orange (mild to intense).And in the end are painted in crimson color palette.Autumn krone plant glows golden, orange and terracotta tones.

Foliage, obsolete their own, begins to fall.But Rowan did not lose a single sheet (in contrast to many other trees and shrubs).With pinnate leaves showered alone components.He is losing miniature leaves one by one, as if falling apart into separate parts.

huge leaf petiole is gradually laid bare.And only completely uncovered, the main brick-red veins parted with the plant, flying away from him in the last turn.

Foliage unusual rowan

When people talk about trees grace, the charm of its grapes and unusual openwork crowns usually mean mountain ash.However, the world is replete with luxury and other rowan species, although they are much less common.

Types integrifolia rowan have unique biological characteristics that make them very attractive decorative effect.Beautifully them whole, often pubescent leaves it deserves special attention.

Sorbus aria

Unusual integrifolia tree dotted with Western sparse forests.It is, ascends up to 10-12 m, spreads its magnificent crown in width of 6-8 meters.

Aria rowan leaf shape is similar to those that sprinkle the alder branches.It is solid, rounded-elliptic, leathery, with pointed or blunt apex, the edges sharp-dvoyakopilchaty, reaches a value of 14 x 9 cm. Its top among the lush green of summer, and the bottom white-felted, gray-haired, like powdered with flour.

Therefore, in Russian it is called powdery mountain ash.Wood gleaming silvery foliage, flowing from the breeze, effectively contrasts on a colorful background formed by the surrounding plants.

wonder if the color of the leaves of mountain ash in the autumn there?Aria colored autumn foliage in a special way.Her immense crown with the onset of autumn shines chic bronze shades.

Rowan intermediate

This type, often called the Swedish rowan, represented by single slender tree 10-15 meters tall, wild in Central European, Baltic and Scandinavian forests.A single sheet of ash, which is a photo photographed professionals and amateurs are very thin.

On top summer it dark green, down the gray hairs pubescent, reddish in the fall.Form neglubokolopastnyh an average dvenadtsatisantimetrovyh whole leaves oblong-ovate.Decorative silver foliage creates original oval crown around the smooth gray trunk.

Rowan buzinolistnaya

Dispersed through the undergrowth shrubs and bushes rowan independent buzinolistnoy settled on the open spaces of the Khabarovsk Territory, Kamchatka and Sakhalin.They seized the Okhotsk coast, and penetrated the Kuriles to Japan.Shrubby trees are relatively small in height (up to two and a half meters), naked straight darkish-brown with a bluish bloom offspring, rounded-ovate crown discharged.

on gray branches with clearly distinguished lenticels concentrated 18-centimeter imparipinnate leaves.Petioles terracotta range studded with oval-lanceolate, sharply serrated leaves, almost naked, dark green gloss.Their number varies from 7 to 15.

Rowan Kёne and Vilmorin

These original straight-trunk trees - representatives of the Chinese flora.For habitats, they have chosen the forest cover and warm temperate zones in Central China.Vilmorin is different from Kёne greater height (the first up to 6 m, the second - up to 3 m) and decorative crown.

Crowns plants sprinkled with imparipinnate leaves.On the 20-inch stalks fit 12-25 leaves, sharply serrated on the edges of which vershinki to the ground.Seasonal rhythms of these plants is very close.Autumn leaf of a mountain ash painted in purple, red-purple color.

foliage Sorbus Torminalis

medical Berek (the second name of the plant) will meet in the Caucasus and Crimea.She captured a part of Ukrainian lands, those that stretch along the south-west of the country.Its natural range prostrated in Western Europe and Asia Minor.On the single trees and compact group and then pushes in the undergrowth and scrub, the second tier of the forest and on the sunny slopes.

slender 25-meter mountain ash covered with rounded crown.The offspring are poured olive shades.Relict trees dark gray, furrowed cracks.Has a length (17 cm) plate, Rowan leaf simple, broadly.

plate at the base rounded heart-shaped, and the tip of her pointed.She was out of the corner with a fine, sharp blade is provided with 3-5.Its top glossy, dark green scales, and the bottom - pilous pubescent.Autumn palette lamina varies from yellow to orange.

Glogoviny There are two varieties: pinnate foliage and pubescent.In the other form, and magnificent solo, group and Alleyne planting.

Rowan olholistnaya

Primorye, Japan, Korea and China affected scattered and downed trees in the group with narrow-pyramidal crowns Rowan olholistnoy.They scattered deciduous and pine forests.Straight shiny dark brown trunks, staring into the sky, reach a height of 18 meters.

The characteristics of leaves are simple, broadly, ostrozazubrennyh forms a distinct venation, in the length of the dense leaf, not exceeding 10 cm. They are similar to the outline of alder leaf.Hence the name of the tree.

Spring light green leaf rowan molds slightly bronze plaque.In summer leaf lower surface yellowish, and the top - an intense dark green.Autumn shines bright juicy orange hues.Especially beautiful tree at the time of the spring bloom and autumn leaf fall.