BugwoodWiki Article

perennial pepperweed
Lepidium latifolium L.

Overview

Appearance
Lepidium latifolium is a perennial that can grow from 1-5 ft. (0.3-1.5 m) in height. In the late fall to early spring a rosette of leaves develops with 4-12 in. (10-30 cm) long and 1-2 in. (2.5-5 cm) wide, toothed leaves. Plants emerge from thick, minimally branched roots or semi-woody crowns. Individuals remain as a rosette for several weeks before the stem elongates.
Foliage
Rosette leaves are long petiolate. Cauline (stem) leaves are alternate, 1-3 in. (2.5-7.6 cm) long and oblong.
Flowers
Flowering occurs in the late spring to summer, when flat, dense clusters of flowers develop at the apex of the flowering stem. Individual flowers are 4-petaled and white.
Fruit
The fruit is a round to oval, hairy capsule that is 0.06 in. (1.5 mm) in diameter. It contains a single seed.
Ecological Threat
Lepidium latifolium invades coastal wetlands, riverbanks, marshes, rangelands, and roadsides. It can form dense monocultures that can increase in size over time crowding out native species. This plant was accidentally introduced into the United States around 1936 as contaminant in seed. It is native to Eurasia.

Resources

Selected Images


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perennial pepperweed
Lepidium latifolium
Infestation
Steve Dewey
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perennial pepperweed
Lepidium latifolium
Feature(s)
Steve Dewey
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perennial pepperweed
Lepidium latifolium
Infestation
Steve Dewey
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perennial pepperweed
Lepidium latifolium
Seedling(s)
Steve Dewey
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perennial pepperweed
Lepidium latifolium
Plant(s)
Steve Dewey
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perennial pepperweed
Lepidium latifolium
Infestation
Steve Dewey
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perennial pepperweed
Lepidium latifolium
Plant(s)
Steve Dewey
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perennial pepperweed
Lepidium latifolium
Infestation
Steve Dewey
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perennial pepperweed
Lepidium latifolium
Infestation
Leslie J. Mehrhoff
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perennial pepperweed
Lepidium latifolium
Plant(s)
Leslie J. Mehrhoff
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perennial pepperweed
Lepidium latifolium
Flower(s)
Leslie J. Mehrhoff
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perennial pepperweed
Lepidium latifolium
Infestation
Leslie J. Mehrhoff
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perennial pepperweed
Lepidium latifolium
Fruit(s)
Leslie J. Mehrhoff
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perennial pepperweed
Lepidium latifolium
Seed(s)
Steve Hurst

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: LELA2
Bayer: LEPLA
GRIN: 21765
ITIS: 503379
NPDN Pest: PBKAWBC
NPDN Host: 31704

Synonyms and Other Names

Other Common Names:
Virginia pepperweed, broadleaved pepperweed, tall whitetop, broadleaved peppergrass

Related Scientific Names:

Cardaria latifolia L.(Synonym)

Categories

Category: Forbs/Herbs