The green alder is a shrub branching from the base and attaining a height of 1- 3 in. The male catkins are already visible in autumn. The twigs are flattened, brownish-green with whitish warts.
The buds, unlike those of other alders, are stalkless, pointed, and coloured greenish brown. The catkins appear together with the leaves in April to May. The cone-like fruit is only 1 cm long and is a paler colour and less woody than that of the common alder. The small-winged fruits are yellow-brown and resemble those of the birch.
It is a high-mountain shrub growing mainly in the Alps and Carpathians, where it forms dense thickets above the tree line at elevations of 1300 to 2200 m; it does not occur in Britain. The Urals and western and central Siberia are the home of a closely related geographical variety. The green alder stands up to abundant shade better than dwarf pine and is found mostly on north-facing, damper slopes. It is of importance in soil retention and prevents the formation of snow and rock avalanches.
There are several varieties of mistletoe, distinguished according to the host plant on which they grow, e.g. fir, pine, and deciduous trees; these are always parasitic on the same species of tree and differ from each other morphologically, primarily by the width of the leaves.
Blooming early in spring from February to April, the flowers are borne in sessile clusters of 3-5. The fruits are berries which ripen in November to December and contain a sticky juice used at one time by fowlers to catch birds. It is a popular ornamental plant used to decorate homes during the Christmas season.
As it does not tolerate full sun, it is desirable to shade at least the lower part of the shrub. Dry situations are likewise not suitable. In ornamental gardening it is used as rootstock for choice varieties and hybrids with large decorative blooms. In riverine woods it is sometimes a harmful plant because it bends and stifles young growing trees.
The buds, unlike those of other alders, are stalkless, pointed, and coloured greenish brown. The catkins appear together with the leaves in April to May. The cone-like fruit is only 1 cm long and is a paler colour and less woody than that of the common alder. The small-winged fruits are yellow-brown and resemble those of the birch.
It is a high-mountain shrub growing mainly in the Alps and Carpathians, where it forms dense thickets above the tree line at elevations of 1300 to 2200 m; it does not occur in Britain. The Urals and western and central Siberia are the home of a closely related geographical variety. The green alder stands up to abundant shade better than dwarf pine and is found mostly on north-facing, damper slopes. It is of importance in soil retention and prevents the formation of snow and rock avalanches.
There are several varieties of mistletoe, distinguished according to the host plant on which they grow, e.g. fir, pine, and deciduous trees; these are always parasitic on the same species of tree and differ from each other morphologically, primarily by the width of the leaves.
Blooming early in spring from February to April, the flowers are borne in sessile clusters of 3-5. The fruits are berries which ripen in November to December and contain a sticky juice used at one time by fowlers to catch birds. It is a popular ornamental plant used to decorate homes during the Christmas season.
As it does not tolerate full sun, it is desirable to shade at least the lower part of the shrub. Dry situations are likewise not suitable. In ornamental gardening it is used as rootstock for choice varieties and hybrids with large decorative blooms. In riverine woods it is sometimes a harmful plant because it bends and stifles young growing trees.
About the Author:
In garden planning, where strong winds disturb warm weather, for instance by the sea, clear garden glass screens will act as a wind break without blocking the view.
0 comments:
Post a Comment