Source: Wikipedia
| Erigeron strigosus | |
|---|---|
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| Cedars of Lebanon State Park, Tennessee | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Erigeron |
| Species: | E. strigosus
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| Binomial name | |
| Erigeron strigosus | |
| Synonyms | |
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Synonymy
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Erigeron strigosus is a species of flowering plant in the family Asteraceae known by the common names prairie fleabane,[1] common eastern fleabane,[2] and daisy fleabane.[3]
Erigeron strigosus is native to eastern and central North America as far west as Manitoba, Idaho and Texas. It has also become naturalized in western North America as well as in Europe and China as a somewhat weedy naturalized species.[4][5][6]
Erigeron strigosus is an annual or biennial herb reaching heights of up to 80 cm (32 inches). It has hairy, petioled, non-clasping, oval-shaped leaves a few centimeters long mostly on the lower part of the plant. One plant can produce as many as 200 flower heads in a spindly array of branching stems. Each head is less than a centimeter (0.4 inches) wide, containing 50–100 white, pink, or blue ray florets surrounding numerous yellow disc florets.[2]
- Varieties[2]
- Erigeron strigosus var. calcicola J. R. Allison - Alabama, Georgia, Tennessee
- Erigeron strigosus var. dolomiticola J. R. Allison - Alabama
- Erigeron strigosus var. strigosus - much of North America; introduced in China
- Erigeron strigosus var. septentrionalis (Fernald & Wiegand) Fernald - much of North America; introduced in Europe
Pollen
[edit]Erigeron strigosus repoduces asexually and sexually in the southeastern United States.[7] Pollen of Erigeron strigosus has been studied, larger higher quality pollen grains are typically sexual and smaller lower quality pollen grains are apomictic. Large pollen grains of Erigeron strigosus are have more variable size which implies more sexual than asexual reproduction.[8]
Invasive
[edit]This species is native to eastern and central North America but has become invasive in parts of Asia and Europe. Erigeron strigosus was falsely identified as E. annuus in China because as foreign species they were not well known.[9] It was also observed as a common invasive in Poland and forms hybrids with Erigeron annuus, two cytotypes of Erigeron strigosus were reported, a triploid (3n=27 and 4n=36) and hexaploid form. [10] It is able to easily adapt to new regions and cross with closely related species. The family and genus Erigeron was found to have high taxonomic diversity within Russia and Europe, novel hybrids, contributes to the invasiveness of the species.[11]
Fire Ecology
[edit]In part of its range Erigeron strigosus is found in tall grass prairie where wildfire is a regular part of the ecosystem. The cycle of fire initially causes a reduction of Erigeron strigosus, but it increases two to three years after fire.[12] Erigeron strigosus can be infected with rust fungus Puccinia dioicae, after fire new rust fungus infections are delayed, thus fire reduces overall rust fungus infection.[13]
References
[edit]- ^ NRCS (2014). "Erigeron strigosus". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 29 September 2021.
- ^ a b c Nesom, G.L. (2006). "Erigeron strigosus". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 20. New York and Oxford: Oxford University Press. Retrieved 29 September 2021 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
- ^ Hilty, John (2020). "Daisy fleabane". Illinois Wildflowers. Retrieved 29 September 2021.
- ^ Biota of North America Program 2014 state-level distribution map.
- ^ Chen, Y.; Brouillet, L. "Erigeron strigosus". Flora of China. Vol. 20. Retrieved 29 September 2021 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
- ^ Tela Botanica, Asteraceae, Erigeron strigosus Mühl. ex Willd., Vergerette maigre in French with French distribution map and other information.
- ^ "Geographic parthenogenesis: A case study of sexual and apomictic Erigeron strigosus Muhl. ex Willd. (prairie fleabane) in the southeastern United States - ProQuest". www.proquest.com. Retrieved 2025-02-14.
- ^ Noyes, Richard D.; Givens, Amy D. (November 2013). "Quantitative Assessment of Megasporogenesis for the Facultative Apomicts Erigeron annuus and Erigeron strigosus (Asteraceae)". International Journal of Plant Sciences. 174 (9): 1239–1250. doi:10.1086/673243. ISSN 1058-5893.
- ^ "Erigeron strigosus in Flora of China @ efloras.org". www.efloras.org. Retrieved 2025-02-12.
- ^ Pliszko, Artur; Łazarski, Grzegorz; Musiał, Krystyna; Kalinowski, Paweł (2024). "New records on chromosome numbers in non-native "Erigeron" L. taxa (Asteraceae) from Poland". BioInvasions Records. 13 (4): 843–853. doi:10.3391/bir.2024.13.4.01. ISSN 2242-1300.
- ^ Sennikov, Alexander N.; Kozhin, Mikhail N. (2023-11-15). "Taxonomic revision of the Erigeron acris group (Asteraceae) in Murmansk Region, Russia, reveals a complex pattern of native and alien taxa". PhytoKeys (235): 83–128. doi:10.3897/phytokeys.235.111020. ISSN 1314-2003. PMC 10665865. PMID 38020474.
- ^ Gibson, David J. (1988). "Regeneration and Fluctuation of Tallgrass Prairie Vegetation in Rresponse to Burning Frequency". Bulletin of the Torrey Botanical Club. 115 (1): 1–12. doi:10.2307/2996561. ISSN 0040-9618. JSTOR 2996561.
- ^ Dendy, S. P.; Tong, B.; Alexander, H. M.; Fay, P. A.; Murray, L.; Xing, Y.; Garrett, K. A. (2017). "A long-term study of burning effects on a plant pathogen in tallgrass prairie". Plant Pathology. 66 (8): 1308–1317. doi:10.1111/ppa.12678. ISSN 1365-3059.
External links
[edit]
Data related to Erigeron strigosus at Wikispecies
Media related to Erigeron strigosus at Wikimedia Commons- UC Calphotos gallery of Erigeron strigosus
- Jepson Manual Treatment: Erigeron strigosus
