Lepidium species

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Scientific Name Lepidium chalepensis (Cardaria chalepensis, Lepidium chalepense) USDA PLANTS Symbol CACH42
Common Name Lenspod Whitetop ITIS Taxonomic Serial No. 823110
Family Brassicaceae (Mustard) SEINet
Reference
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Description Life zones and habitat: Plains to montane (4300 to 10000 ft.); disturbed areas, pastures, fields, riverbanks.
Plant: Perennial 4 to 28 inches high, one or more stems, branched above; foliage densely hairy to smooth.
Leaves: Basal leaves obovate, spatulate, or ovate, 1 to 3-3/8 inches long on petioles 1/3 to 1-3/4 inches long, edges nearly entire or dentate; stem leaves obovate to oblong or lanceolate to oblanceolate, bases auriculate or saggitate and sessile, 1 to 3-2/3 inches long; surfaces smooth or with pubescent hairs.
Inflorescence: Dense, flat-topped cluster of many flowers; each with 4 green sepals, 4 white petals and 6 yellow stamens.
Bloom Period: May to June.
Fruit: Nearly round, smooth and less than 1/4-inch across, tip without notch.
References: "Flora of Colorado" by Jennifer Ackerfield, Jepson eFlora, Flora of North America and SW Colorado Wildflowers.com.
BONAP Distribution Map

Colorado Status:
Introduced
Scientific Name Lepidium draba (Cardaria draba) USDA PLANTS Symbol CADR
Common Name Hoary Cress, Whitetop ITIS Taxonomic Serial No. 515765
Family Brassicaceae (Mustard) SEINet
Reference
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Description Life zones and habitat: Plains to montane (3700 to 8700 ft.); roadsides, disturbed areas, agricultural areas.
Plant: Perennial 4 to 30 inches high, one or more stems; foliage hairy to smooth.
Leaves: Basal leaves obovate to spatulate, 1-1/4 to 4-3/4 inches long on short petioles, edges entire to toothed or sinuate; oblong to obovate stem leaves, bases auriculate or saggitate and sessile; surfaces smooth or with pubescent hairs.
Inflorescence: Flat-topped, dense group of many flowers, 4 green sepals, 4 white petals and 6 yellow stamens.
Bloom Period: May to June.
Fruit: Heart-shaped, smooth and less than 1/4-inch across, tip without notch.
References: "Flora of Colorado" by Jennifer Ackerfield, Jepson eFlora, SEINet and SW Colorado Wildflowers.com.
BONAP Distribution Map

Colorado Status:
Introduced
NOXIOUS WEED
Scientific Name Lepidium latifolium USDA PLANTS Symbol LELA2
Common Name Broadleaf Pepperweed ITIS Taxonomic Serial No. 503379
Family Brassicaceae (Mustard) SEINet
Reference
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Description Life zones and habitat: Plains and foothills (3900 to 7600 ft.); roadsides, ditches, disturbed areas, agricultural areas.
Plant: Bush-like perennial 1 to 5 feet high, simple erect stem branched upward.
Leaves: Basal leaves on petioles less than an inch up to 5-1/2 inches long; blades elliptic to oblong, 1-3/8 to 6 inches long and 5/8 to 2 inches wide; edges entire to toothed; stem leaves sessile or with short petioles; blades oblong to lanceolate, 3/4 to 3-1/2 inches long and up to 1-3/4 inches wide, edges entire to toothed.
Inflorescence: Many white flowers in dense clusters (small branched racemes), borne at branch tips; each small blossom less than 1/4-inch across with 4 obovate petals and six stamens.
Bloom Period: June to October.
Fruit: A small roundish, slightly hairy pod 1/16 to 1/8-inch across.
References: "Flora of Colorado" by Jennifer Ackerfield and SEINet.
BONAP Distribution Map

Colorado Status:
Introduced
NOXIOUS WEED
Scientific Name Lepidium virginicum USDA PLANTS Symbol LEVI3
Common Name Peppergrass, Virginia Pepperweed ITIS Taxonomic Serial No. 22955
Family Brassicaceae (Mustard) SEINet
Reference
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Description Life zones and habitat: Widely distributed in North America; in Colorado, plains to foothills (5000 to 9500 ft.); dry, usually open areas.
Plant: Erect, leafy annual 4 to 20 inches tall.
Leaves: Leaves alternate; lower leaves 2 to 6 inches long, spatulate to obovate, with a few pointed teeth along edges (pinnately lobed to dissected); upper leaves not clasping, smaller than lower leaves, linear to oblanceolate, tips pointed, sometimes toothed edges, sparsely hairy.
Inflorescence: Multiple clusters (racemes) up to 4 inches long with many small flowers each with 4 green sepals, 4 white petals nearly twice as long as sepals, and 2 to 4 stamens.
Bloom Period: May to August.
Fruit: Small, flattened round to elliptical green pod (turning brownish) about 1/8-inch long.
References: "Flora of Colorado" by Jennifer Ackerfield and SEINet.
BONAP Distribution Map

Colorado Status:
Native

© Tom Lebsack 2021