BugwoodWiki Article

hoary cress
Lepidium draba (L.) Desv

Overview

Appearance
Lepidium draba is a perennial forb in the mustard family that can grow up to 2 ft. (0.6 m) tall.
Foliage
The leaves are soft, gray-green, 1.5-3 in. (3.7-7.6 cm) long with fine hairs and heart-shaped bases. The lower leaves tend to have more hairs than the upper leaves. The upper leaves clasp to the stem of the plant.
Flowers
Flowering occurs in early spring to early summer, when white, four-petaled flowers develop in clusters at the apex of the stem.
Fruit
The fruit are heart-shaped seed pods.
Ecological Threat
Lepidium draba invades rangelands, pastures, streambanks, and open forests primarily in the western United States, although it does occur in the East. It can form large infestations that can displace native species and reduce grazing quality. This plant is native to Central Europe and Western Asia and was first introduced into the United States in the early 20th century.

Resources

Selected Images


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2149050

hoary cress
Lepidium draba
Flower(s)
Chris Evans
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hoary cress
Lepidium draba
Flower(s)
Steve Dewey
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hoary cress
Lepidium draba
Foliage
Pedro Tenorio-Lezama
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hoary cress
Lepidium draba
Foliage
Pedro Tenorio-Lezama
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1459118

hoary cress
Lepidium draba
Flower(s)
Steve Dewey
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1459928

hoary cress
Lepidium draba
Plant(s)
Steve Dewey
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2154015

hoary cress
Lepidium draba
Infestation
Montana Statewide Noxious Weed Awareness and Education Program Archive
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2149047

hoary cress
Lepidium draba
Plant(s)
Chris Evans
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2149059

hoary cress
Lepidium draba
Infestation
Chris Evans
1459117
1459117

hoary cress
Lepidium draba
Feature(s)
Steve Dewey
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5306088

hoary cress
Lepidium draba
Seed(s)
Steve Hurst
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5376352

hoary cress
Lepidium draba
Seed(s)
Julia Scher

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: Lepidium

Other System Links

Plants: LEDR
GRIN: 317224

Synonyms and Other Names

Other Common Names:
whitetop, globed-podded hoarycress, peppergrass, whiteweed

Related Scientific Names:

Cardaria draba (L.) Desv(Synonym)

Categories

Category: Forbs/Herbs