Arum italicum
Italian arum ( Arum italicum ), fruit stand.
The Italian arum ( Arum italicum ) is a plant of the family Araceae ( Araceae ). The species is very rich in form.
Description
The Italian arum is an autumn - spring green, perennial, herbaceous plant that reaches the plant height of 20 to 80 centimeters. It forms a Rhizomknolle. The stalked leaves floating in the autumn; they have a length of 9 to 40 cm and a width of 2 to 29 centimeters. The leaf blades are arrow-shaped and usually have conspicuous white nerves are rarely spotted black.
The Italian arum is monoecious getrenntgeschlechtig ( monoecious ). The inflorescence consists of inflorescence stem, spathe and piston ( spadix ). The inflorescence stem is 15 to 40 inches high. The unisexual flowers are located at the bottom of a yellowish bulb, hid under a single, green -white bract that is mentioned in the arum family spathe. The spathe is 11-38 inches long, white inside, outside whitish- green and at the edge often crowded light purple. The male flowers are in this case more than the female. The male flowers are in front of the yellow blossom. Above and below the male flowers are numerous sterile flowers available.
The flowering period extends from March to May
The berries of the Italian arum are red.
Occurrence
The Italian arum is in the Mediterranean, the Caucasus, in France and in southern England in Macchien, vineyards, olive groves, hedges and deciduous forests before.
System
There are four subspecies of Arum italicum:
- Arum italicum Mill subsp. italicum: The leaf veins are whitish, yellowish or greenish spathe the white.
- Arum italicum subsp. albispathum ( Satven ex Ledeb. ) Prime: The leaves are all green, the spathe is white. The distribution area is the Crimea and the Caucasus.
- Arum italicum subsp. canariense ( Webb & Berthel. ) P.C.Boyce
- Arum italicum subsp. neglectum ( F.Towns. ) Prime
Ingredients
In Italian arum are calcium oxalate crystals, soluble salts of oxalic acid and other sharp substances. The plant is poisonous, which is probably based on the ratio of free to bound crystalline oxalic acid. In the immature fruits, the content of soluble oxalates is up to 0.4 %, in the ripe fruit up to 0.3 %.
Use
The Italian arum is scattered fruit used as ornamental ornamental plant for shady groups of trees and plants. He is in culture at least since 1683. The variety ' Pictum ' ( ' marmoratum ') has mottled leaves.