|yellow iris|| USDA PLANTS Symbol: IRPS
U.S. Nativity: Exotic
Habit: Aquatic Plants Forbs/Herbs
|Iris pseudacorus L.|
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Taxonomic Rank: Liliopsida: Liliales: Iridaceae
|Synonym(s): paleyellow iris|
|Native Range: western Asia, North Africa; western Europe, N. Africa (BAIL);|
Yellow flag iris is a perennial plant that occurs in wet areas such as ditches and marshes. Leaves arise from the base of the plant and are flattened, 3-4 ft. (0.9-1.2 m) long with a raised mid-rib. Bright yellow flowers appear in late spring to early summer. Flowers develop in groups of 2-10 and have three drooping, yellow sepals with purple-brown markings and 3 smaller, unmarked and upright yellow petals. Flowers are about 3 in. (7.6 cm) wide. Fruit are brown capsules that are 2 in. (5 cm) long. Yellowflag iris was introduced into the United States in the mid-1800s as an ornamental from Eurasia or Northern Africa. Plants can withstand a wide variety of conditions, including brackish water, acidic water and periods of drought.
|Identification, Biology, Control and Management Resources|
|Selected Images from Invasive.org||View All Images at Invasive.org|
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.
|U.S. National Parks where reported invasive:|
|Colonial National Historical Park (Virginia)|