Alyssum alyssoides is a species of flowering plant in the mustard family known by several common names, including pale madwort and yellow alyssum. It is native to Eurasia, but it can be found throughout much of the temperate world as an introduced species and sometimes a common weed.[2] For example, it has been noted as a weed in the western United States.[3] It often appears in arable fields, sandy tracks, pits, and docks.[4]
| Alyssum alyssoides | |
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Brassicales |
| Family: | Brassicaceae |
| Genus: | Alyssum |
| Species: | A. alyssoides
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| Binomial name | |
| Alyssum alyssoides | |
| Synonyms[1] | |
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List
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Description
editThis is a hairy annual or biennial herb producing stems which grow upright or lie along the ground to a maximum length of 30 to 40 centimeters.[5] It produces yellow flowers May–July that fade to white with four small petals about 1.5–3 mm long.[6][7] The fruit is a round, hairy capsule up to half a centimeter long. The hairs are branched, often stellate (star shaped).[6] The seeds are tiny, 1–2 mm long, with minuscule wings.[7] The leaves are simple, narrowly oblanceolate or linear with smooth margins, and are alternately arranged.[2][5]
References
edit- ^ "The Plant List: A Working List of All Plant Species". Retrieved 8 July 2014.
- ^ a b "Alyssum alyssoides (pale alyssum): Go Botany". gobotany.nativeplanttrust.org. Retrieved 2021-04-21.
- ^ "Plants Profile for Alyssum alyssoides (pale madwort)". plants.usda.gov. Retrieved 2021-04-21.
- ^ "Alyssum alyssoides | Online Atlas of the British and Irish Flora". www.brc.ac.uk. Retrieved 2021-04-21.
- ^ a b "Alyssum alyssoides : Small Allison". National Biodiversity Network Atlas. Retrieved April 21, 2021.
- ^ a b Stace, C. A. (2010). New Flora of the British Isles (Third ed.). Cambridge, U.K.: Cambridge University Press. p. 406. ISBN 9780521707725.
- ^ a b "Alyssum alyssoides". ucjeps.berkeley.edu. Retrieved 2021-04-21.
External links
edit- Jepson Manual Treatment
- USDA Plants Profile
- "Alyssum alyssoides". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture.
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