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.orgView All Images at Invasive.org


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(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.


Invasive Listing Sources:
City of Ann Arbor Michigan Parks and Recreation
Mid-Atlantic Exotic Pest Plant Council, 2005
Reichard, Sarah. 1994.  Assessing the potential of invasiveness in woody plants introduced in North America. University of Washington Ph.D. dissertation.