Alyssum simplex

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Scientific Name Alyssum simplex USDA PLANTS Symbol ALSI8
Common Name Wild Alyssum, European Madwort ITIS Taxonomic Serial No. 823027
Family Brassicaceae (Mustard) SEINet
Reference
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Description Life zones and habitat: Plains to montane (4400 to 9500 ft.); dryer areas in fields, hillsides, roadsides and disturbed areas.
Plant: Erect, hairy annual, 2 to 13 inches tall; single or several stems from base; plant covered with short, grey-white stellate (star-shaped) hairs.
Leaves: Stem leaves 3/8 to 1-1/8 inches long, gradually smaller upward, oblanceolate to elliptic-lanceolate.
Inflorescence: Elongated cluster of tiny pale yellow flowers along the upper few inches of the stem; four oblanceolate petals notched at tips; four oblong, green or reddish sepals covered by star-shaped hairs.
Bloom Period: April to June.
Fruit: Round, somewhat flattened green disks about 1/4-inch in diameter or less, covered with star-shaped hairs.
References: "Flora of Colorado" by Jennifer Ackerfield, www.americansouthwest.net and and Flora of North America.
BONAP Distribution Map
Colorado Status:
Introduced

© Tom Lebsack 2021