Myriophyllum verticillatum

Lively milfoil ( Myriophyllum verticillatum )

The whirlwind milfoil ( Myriophyllum verticillatum ) is a species of the genus Myriophyllum ( Myriophyllum ) in the family of milfoil plants ( Haloragaceae ). It is rarely used as an ornamental plant for ponds.

Features

The whirlwind milfoil is a perennial herbaceous plant that growth lengths of usually 10 to 150, can rarely reach up to 300 centimeters. It grows as a submerged plant ( hydrophyte ). The plant is branched and submerged up to the inflorescence. It forms enduring winter buds. The stem is usually green. The five to six whorls arranged leaves are pinnate comb-shaped and have thread-like sections. At the leaf surface of the leaves glands are present.

This species is predominantly monoecious getrenntgeschlechtig ( monoecious ). There are plants with female, male and hermaphrodite flowers isolated with. The flowers are in the axils of the bracts, often referred to as the fallen leaf region to preserve sharp, eared inflorescences, which have a length of 5 to 20 centimeters. The bracts of the flowers are pinnate or comb- like pinnate, and usually longer than the flowers. The flowers are cruciform. The Endfiedern are wider than at the base in the middle part. The petals of the male flowers are white, the female flowers are usually stunted. The scars are pinkish white. There are eight stamens present. Vierkammerigen the fruits have a smooth surface.

The flowering period extends from June to September. The flowers are pollinated by the wind. The fruit spread over the water.

The chromosome number is n = 14

Occurrence

The whirlwind milfoil is found in warm and cool Europe, Asia and North America.

It settled standing or slow-flowing, nutrient-rich, low in calcium and little polluted water, which usually have a muddy ground, such as backwaters, lakes, ponds and ditches.

Swell

• Description in the Flora of China. (English )