Silphium asteriscus
| Silphium asteriscus | |
|---|---|
 | |
| Silphium asteriscus var. asteriscus | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Embryophytes |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Tribe: | Heliantheae |
| Genus: | Silphium |
| Species: | S. asteriscus |
| Binomial name | |
| Silphium asteriscus | |
Silphium asteriscus, commonly called starry rosinweed,[2] is an herbaceous plant in the family Asteraceae. It is native to the eastern United States, from Oklahoma and Texas east to Florida and Pennsylvania.[3] It is a widespread species found in a variety of open habitats, such as prairies, woodlands, and flatwoods.[4][5]
Taxonomy
[edit]Additional research is needed to better understand the taxonomy of this species. It remains perhaps the most poorly-understood Silphium in eastern North America.[6] It appears to show a high level of local variability throughout its range, which has been interpreted as either a species complex, a single highly variable species, or some combination of both. Due to conflicting information about the best circumscription of the varieties, the taxonomy of this species remains unsettled.[7][8]
The most recent treatment from 2020 ranked Silphium asperrimum, Silphium dentatum and Silphium simpsonii at species status.[8] If adopted, this leaves S. asteriscus with three remaining varieties. They are:
- Silphium asteriscus var. asteriscus - Appalachian and eastward; with a congested, hispid inflorescence
- Silphium asteriscus var. laitoflium - south and west of the Appalachians; with broad, opposite leaves and a spreading glabrous inflorescence
- Silphium asteriscus var. trifoliatum - widespread; similar to the above but with narrow whorled leaves[8]
Ecology
[edit]Silphium asteriscus is insect pollinated and is recorded to have been visited in northern Florida by Agapostemon virescens, Augochloropsis sumptuosa,Ceratina, Halictus poeyi/ligatus, Lasioglossum apopkense, Lasioglossum pectorale, Lasioglossum reticulatum, Megachile albitarsis, Megachile georgica, Megachile mendica, Megachile petulans, Megachile texana, Melissodes tepaneca, Svastra aegis, and Svastra atripes. [9]
Line drawing of Silphium asteriscus
References
[edit]- ↑ "Silphium". Index Nominum Genericorum. International Association for Plant Taxonomy. 9 February 1996. Retrieved 24 June 2008.
- ↑ NRCS. "Silphium asteriscus". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 18 January 2017.
- ↑ Kartesz, John T. (2014). "Silphium asteriscus". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). Retrieved 18 January 2017.
- ↑ Flora of North America
- ↑ Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: July 2015. Collectors: Andre F. Clewell, Steve L. Orzell, Robert K. Godfrey, R. A. Norris, R. Komarek, Loran C. Anderson, Wilbur H Duncan, George R. Cooley, Richard J. Eaton, James D. Ray, Jr., R L Lazor, Gary R. Knight, C. Jackson, K. Craddock Burks, Richard S. Mitchell, A. H. Curtiss, R. Kral, Paul L. Redfearn, Jr. States and Counties: Florida: Bay, Dixie, Franklin, Gadsden, Jackson, Jefferson, Leon, Liberty, Levy, Okaloosa, Taylor, Wakulla. Georgia: Brooks, Grady, Hall, Thomas.
- ↑ Chester, Edward (2015). Guide to the Vascular Plants of Tennessee.
- ↑ Flora of Missouri
- 1 2 3 "Flora of the Southern and Mid-Atlantic States". Archived from the original on 6 October 2018. Retrieved 18 January 2017.
- ↑ Ulyshen, M. D., K. Robertson, S. Horn, and C. Dixon. 2024. Characterization of the bee community and pollination network in a southeastern U.S. pine savanna. Frontiers in Ecology and Evolution 12:1403602.
External links
[edit]
Media related to Silphium asteriscus at Wikimedia Commons
Data related to Silphium asteriscus at Wikispecies
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