large gray willow: Salix cinerea (Salicales: Salicaceae): Invasive Plant Atlas of the United States

large gray willow	USDA PLANTS Symbol: SACI U.S. Nativity: Exotic Habit: Hardwood Trees Shrub or Subshrub
Salix cinerea L.

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Taxonomic Rank: Magnoliopsida: Salicales: Salicaceae
Native Range: Europe to Kamchatka & n. Persia (REHD);
Appearance Salix cinerea is a is a small tree that can reach heights of about 33 ft (10 m) tall. It is generally branched from the base but can form a single trunk. It usually has a broad, rounded to flattened crown. The bark is dark grey-brown and often becomes fissured with age. Foliage The leaves are shiny on the upper surface, with soft grey hairs on the underside. The leaves are usually obovate or broadly oblanceolate, 0.8-3.5 in (2-9 cm) long by 0.4-1.2 in (1-3 cm) wide. Flowers The flower are cylindrical catkins which appear before the leaves in spring. They are about 0.8-1.2 in (2-3 cm) long by 0.2-0.4 in (0.6-1 cm) wide with female catkins longer and narrower than male catkins. Fruit The fruits are small capsules with two valves, containing many tiny seeds. Ecological Threat S. cinerea readily invades riparian habits, brackish wetlands on coastland, wet forests, alpine bogs, as well as disturbed and undisturbed land on national park land and elsewhere. S. cinerea can grow on a wide range of soils. It can tolerate permanent water logging and a pH down to 3.5.

Selected Images from Invasive.org

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Tree(s); habitat Robert Vidéki, Doronicum Kft., Bugwood.org Additional Resolutions & Image Usage	Tree(s); habitat Robert Vidéki, Doronicum Kft., Bugwood.org Additional Resolutions & Image Usage	Tree(s); Caricetum acutiformis; habitat Robert Vidéki, Doronicum Kft., Bugwood.org Additional Resolutions & Image Usage	Stem(s); tree trunk Robert Vidéki, Doronicum Kft., Bugwood.org Additional Resolutions & Image Usage
Foliage; Robert Vidéki, Doronicum Kft., Bugwood.org Additional Resolutions & Image Usage	Foliage; Robert Vidéki, Doronicum Kft., Bugwood.org Additional Resolutions & Image Usage	Foliage; Robert Vidéki, Doronicum Kft., Bugwood.org Additional Resolutions & Image Usage	Fruit(s); Robert Vidéki, Doronicum Kft., Bugwood.org Additional Resolutions & Image Usage

EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org

State List
This map identifies those states that list this species on their invasive species list or law.

This species does not appear on any state or national invasive species lists.

Please contact us if a state or federal list needs to be updated.

Invasive Listing Sources:

Reichard, Sarah. 1994. Assessing the potential of invasiveness in woody plants introduced in North America. University of Washington Ph.D. dissertation.

WeedUS - Database of Plants Invading Natural Areas in the United States