BugwoodWiki Article

narrowleaf bittercress
Cardamine impatiens L.

Overview

Appearance
Cardamine impatiens is an herbaceous plant which can be an annual or biennial. It can grow to be 2 ft. (0.6 m) in height. The stem is erect and glabrous. It is somewhat shade tolerant, so it does well in forest edges or dappled sunlight. It also does well in areas that have moist soil.
Foliage
The leaves (6-20) are thin and membranous. The basal rosette of leaves are pinnately divided. Each leaf has 3-11 leaflets with rounded lobes. The leaves along the stem are also pinnately divided, with sharply toothed or lacerate leaflets. These leaves are sagittate auriculate (a pair of fleshy blunt projections turned downward) at their base, which is an important diagnostic characteristic.
Flowers
The plant blooms from May to August and its white flowers are small, being up to 0.1 in. (2.5 mm) long.
Fruit
The slender siliques (a type of fruit) ripen from May to September. They are 0.6-0.8 in. (1.5-2 cm) long and there are 10-24 seeds in each of them which shoot out from the dry fruits.
Ecological Threat
Cardamine impatiens produces many seeds per plant. It can form dense stands invading woodland habitats, and outcompete native species.

Resources

Selected Images


5270067
5270067

narrowleaf bittercress
Cardamine impatiens
Plant(s)
Leslie J. Mehrhoff
5449232
5449232

narrowleaf bittercress
Cardamine impatiens
Flower(s)
Leslie J. Mehrhoff
5449272
5449272

narrowleaf bittercress
Cardamine impatiens
Plant(s)
Leslie J. Mehrhoff
5449353
5449353

narrowleaf bittercress
Cardamine impatiens
Stem(s)
Leslie J. Mehrhoff
5449315
5449315

narrowleaf bittercress
Cardamine impatiens
Foliage
Leslie J. Mehrhoff
5449348
5449348

narrowleaf bittercress
Cardamine impatiens
Plant(s)
Leslie J. Mehrhoff
5449321
5449321

narrowleaf bittercress
Cardamine impatiens
Plant(s)
Leslie J. Mehrhoff
5449309
5449309

narrowleaf bittercress
Cardamine impatiens
Plant(s)
Leslie J. Mehrhoff

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: Magnoliopsida
Subclass: Dilleniidae
Order: Capparales
Family: Brassicaceae
Genus: Cardamine

Other System Links

Plants: CAIM
GRIN: 9006
ITIS: 22798

Categories

Category: Forbs/Herbs