Dactylorhiza

Dactylorhiza Neck. ex Nevski, 1937 terricolous is a genus of plants belonging to the family Orchidaceae, very similar to the genus Orchis, which differs in the form of rizotuberi that instead of integers are webbed and deeply divided. Precisely this characteristic is the genus name from Greek words daktylos format (finger) and Rhiz (root).

Description

The morphological data relate mainly to European species and in particular those spontaneous Italian. The orchids of this type are generally herbaceous glabrous higher than 80 to 100 cm .. The organic form is prevalent bulbous geophytes (G bulb), which are perennial plants that bring the buds in place underground.

During the season, no adverse air bodies and gems are in organs called underground bulbs or tubers, storage organs that annually produce new stems, leaves and flowers. Terrestrial orchids are as unlike other species of the same family, are "epiphytic", ie not living at the expense of other plants of the greater proportion.

Roots

The roots are sorted, thin secondary bulbs, and are in the top (neck) of the bulbs.

Leaves

The leaves, up to a dozen in all, both basal (in some species is reduced or absent) and cauline (along the stem are arranged alternately). The predominant form is lanceolate more or less oval or narrow (especially those stem), the apex may be blunt (basal leaves) or acute (upper leaves). The habit is more or less erect, sometimes license.

On the surface there are also parallel ribs arranged longitudinally (leaf type parallelinervie). Are spotted or not. Also amplessicauli and embracing (guainanti) the stem.

Flower

The flowers are hermaphrodite and zygomorphic irregularly, pentacyclic (perigonium to 2 whorls of tepals, two whorls of stamens (one only fertile - the other being atrophied), a whorl of the stylus) . The flower color ranges from violet, pink-violet, purple, yellow to greenish yellow or rarely white.



Source: http://it.wikipedia.org/wiki/Dactylorhiza


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