BugwoodWiki Article

Uruguayan pampas grass
Cortaderia selloana (Schult. & Schult. f.) Asch. & Graebn.

Overview

Appearance
Cortaderia selloana is a perennial in the grass family (Poaceae) growing 6-13 ft. (1.8-4 m) in height. Lateral roots can spread to 13 ft. (4 m) in diameter and 11.5 ft. (3.5 m) in depth.
Foliage
Cortaderia selloana leaf blades can get up to 6 ft. (1.8 m) long and 1-3 in. (2.5-7.6 cm) wide. They are V-shaped in cross-section, and bluish green in color. The upper surface is smooth at base. The lower surface may be smooth or hairy towards collar. Leaf tips are bristly and curled and margins are rough and sharp.
Flowers
The inflorescence is a showy dense, feathery, 1-4 ft. (0.3-0.9 m), stiff, light violet to silvery white panicle.
Fruit
The wind-dispersed seeds of Cortaderia selloana can be found at distances up to 20 mi. (32.2 km) away from the parent plant. Each female flower head can produce up to 100,000 seeds.
Ecological Threat
Cortaderia selloana requires sandy soils, ample moisture, and sunny locations. It tolerates warm summer temperatures, intense sunlight, and moderate drought. The vigorous growth habit and large size enables it to invade natural ecosystems. Cortaderia selloana can invade sandy, moist ditch banks. Vegetative reproduction can occur when root fragments develop shoots at the base of the plant. It has the ability to form dense stands where it can quickly become a fire hazard.

Resources

Selected Images


5392806
5392806

Uruguayan pampas grass
Cortaderia selloana
Plant(s)
The Nature Conservancy Archive
5392805
5392805

Uruguayan pampas grass
Cortaderia selloana
Plant(s)
The Nature Conservancy Archive
5387235
5387235

Uruguayan pampas grass
Cortaderia selloana
Plant(s)
Joseph M. DiTomaso
5392807
5392807

Uruguayan pampas grass
Cortaderia selloana
Flower(s)
The Nature Conservancy Archive
1565196
1565196

Uruguayan pampas grass
Cortaderia selloana
Flower(s)
Joy Viola
1565197
1565197

Uruguayan pampas grass
Cortaderia selloana
Flower(s)
Joy Viola
5387236
5387236

Uruguayan pampas grass
Cortaderia selloana
Flower(s)
Joseph M. DiTomaso
5401685
5401685

Uruguayan pampas grass
Cortaderia selloana
Flower(s)
Lesley Ingram
5387237
5387237

Uruguayan pampas grass
Cortaderia selloana
Stem(s)
Joseph M. DiTomaso
5471972
5471972

Uruguayan pampas grass
Cortaderia selloana
Floret(s)
D. Walters and C. Southwick
5471970
5471970

Uruguayan pampas grass
Cortaderia selloana
Floret(s)
D. Walters and C. Southwick
5471968
5471968

Uruguayan pampas grass
Cortaderia selloana
Fruit(s)
D. Walters and C. Southwick

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Liliopsida
Subclass: Commelinidae
Order: Cyperales
Family: Poaceae
Genus: Cortaderia

Other System Links

Plants: COSE4
GRIN: 11618
ITIS: 41597
NPDN Host: 33142

Synonyms and Other Names

Other Common Names:
pampas grass, silver pampas grass, Uruguayan pampasgrass

Categories

Category: Grass or Grasslike