Itea virginica

American rosemary willow ( Itea virginica )

The American rosemary willow ( Itea virginica ) is a deciduous shrub virgate from the monotypic family Iteaceae with numerous, erect or ascending branches reason. The leaves are 2-9 inches long, grazing similar leaf blades. The natural range of the species is located in the eastern United States. It is often used as an ornamental shrub.

Description

The American rosemary willow is a deciduous, 1-3 m tall shrub with numerous, thin, rod- shaped, erect or ascending branches and basic at first tomentose hairy stems. The leaves have a 3 to 10 millimeters long stem. The leaf blade is elliptic to oblong - lanceolate wrong, 2-9 inches long and 1-4 cm wide, acute or short acuminate, usually with wedge-shaped base and a glandular, finely and sharply serrated edge. The Leaves are deep green, the underside a little brighter, both sides are mostly bare. The autumn color is wine - up purple.

The inflorescences are 4-15 centimeters long, slender, curved grapes from 20 to 80 flowers with weak fluff hairy inflorescence axis and weak fluff hairy, 1 to 3.5 mm long pedicles. You are at the ends of leafy branches. The flowers are hermaphroditic, white, fragrant and 1 to 1.5 inches wide. The sepals are erect or slightly divergingly, narrowly oblong, 6-10 mm long and pointed. The petals are narrow oblong, 2.5 to 6 millimeters long. The stamens are 1-2 mm long and pubescent. The stylus is longitudinally grooved. As fruits cylindrical, 7-10 mm long, more or less curved, hairy capsules are made with lasting pencils. The seeds are 1 to 1.4 mm long and 0.4 to 0.9 mm wide, smooth and shiny. The American rosemary willow blooms from March to June.

The chromosome number is 2n = 22

Occurrence and habitat requirements

The natural range is located in the eastern United States, ranging from southern New Jersey and Illinois ' to Florida and Texas. The American rosemary willow grows in swamps and moist forests, river banks and beaver ponds in heights up to 300 meters in partially shaded and cool locations.

System

The American rosemary willow ( Itea virginica ) is a species of the genus rosemary willow ( Itea ) in the family Iteaceae, Order Stone (Saxifragales ). The species was described in 1753 by Carl Linnaeus in Species Plantarum first time scientifically. The genus name comes from the Greek Itea and was used for various willows (Salix ) are used. The term was already used by Homer in both the Iliad and the Odyssey. Carl Linnaeus transferred the name to the genus of rosemary willow, of which he knew only the herein described American rosemary with their grazing similar leaves. The specific epithet virginica means " virginisch " and refers to the British colony of Virginia. It is used for species that are native to North America.

Use

The American rosemary willow is commonly cultivated because of the decorative inflorescence, the fragrant flowers and colorful Herbstbelaubung.

Evidence

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