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Cardamine rotundifolia Michx.
Life   Plantae   Dicotyledoneae   Brassicaceae   Cardamine

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Cardamine rotundifolia Michx.
American bittercress

Image of Cardamine rotundifolia

General Information
Symbol: CARO3
Group: Dicot
Family: Brassicaceae
Duration: Perennial
Growth Habit : Forb/herb
Native Status : L48   N
Data Source and Documentation
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Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   


click on a thumbnail to view an image, or see all the Cardamine thumbnails at the Plants Gallery

Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 2: 187. Provided by Kentucky Native Plant Society . Scanned by Omnitek Inc . Usage Requirements .




Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Dilleniidae
Order Capparales
Family Brassicaceae ⁄ Cruciferae – Mustard family
Genus Cardamine L. – bittercress
Species Cardamine rotundifolia Michx. – American bittercress

Subordinate Taxa

This plant has no children

Legal Status

Threatened and Endangered Information:
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
New Jersey round-leaf bittercress Endangered
New York mountain watercress Endangered
Tennessee round-leaf watercress Special Concern

Wetland Status

Interpreting Wetland Status

North America
Atlantic and Gulf Coastal Plain OBL
Eastern Mountains and Piedmont OBL
Midwest OBL
Northcentral & Northeast OBL

Related Links

More Accounts and Images
Integrated Taxonomic Information System (CARO3)
University of Tennessee Herbarium (Distribution) (CARO3)



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

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Following modified from Flora of North America
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Link to Flora of North America home
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FNA Vol. 7 Page 465, 483 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Brassicaceae | Cardamine

37. Cardamine rotundifolia Michaux, Fl. Bor.-Amer. 2: 30. 1803.

Dentaria rotundifolia (Michaux) Greene

Perennials; glabrous throughout. Rhizomes slender, to 2 mm diam. Stems usually procumbent, sometimes erect, (not flexuous), unbranched or branched, (1-) 1.5-3(-5) dm. Rhizomal leaves absent. Basal leaves (soon withered), not rosulate. Cauline leaves simple, petiolate; petiole (0.3-)0.5-2.5(-4) cm, base not auriculate; blade oblong, ovate, suborbicular, or cordate, (0.5-) 1-4.5(-5.5) cm × (5-)10-40(-54) mm, base cordate, rounded, or truncate, margins entire, repand, or sinuate, (distally with shorter petiole, blade smaller). Racemes ebracteate. Fruiting pedicels divaricate to ascending, (6-)10-15(-20) mm. Flowers: sepals oblong, 2-3 × 1-1.7 mm, lateral pair not saccate basally; petals white, broadly oblanceolate, spreading, 5-7(-8) × 2-3 mm, (not clawed, apex rounded); filaments: median pairs 3.5-4.5 mm, lateral pair 2.7-3.5 mm; anthers oblong, 0.8-1.2 mm. Fruits linear, (torulose), 1-1.5(-2) cm × 0.8-1.1 mm; ovules 40-80 per ovary; style 1.5-2.5 mm. Seeds brown, oblong to ovoid, 0.9-1.1 × 0.5-0.6 mm.

Flowering Apr-Jun. Stream banks, swamps, low woodland, wet rocky areas, seepage areas; 150-400 m; Del., Ga., Ky., Md., N.J., N.Y., N.C., Ohio, Pa., Tenn., Va., W.Va.

Updated: 2019-11-20 14:29:40 gmt
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