Birch-trees
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So autochthonal species are presented in base of their ecologic
needs: into the dark and damp deep valleys the yew, the spruce
and the poplar with an underwood of ferns reappear; in the open areas,
less damp, much more hot and bright we can find the spruce mixed together
the birch-tree.
That last species is defined “pioneer” and it is present in the
Camonica Valley until the first phase after the glaciation of the
Quaternary period and even today appears after a deforestation. Where
the aridity is lesser it is present the locust-tree, an exotic plant that
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comes from North America and here inserted in a recent time.
Going down along the way, in the dry and sunny tracts, into the chestnut
woods there is the juniper in association with bilberry bushes and
the dogrose with an underwood of heathers and lings.
In places of the old farmsteads, now partially in ruins, there are the elder,
the nettles and other herbs, like the galinsoda, comes from South America.
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