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 and woodlands.[4]
Additional research is needed to better understand the taxonomy of this species. It remains perhaps the most poorly-understood Silphium in eastern North America.[5] 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.[6][7]
The most recent treatment from 2020 ranked Silphium asperrimum, Silphium dentatum and Silphium simpsonii at species status.[7] 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[7]
^USDA, NRCS (n.d.). "Silphium asteriscus". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 18 January 2017.
^"Silphium asteriscus". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014. Retrieved 18 January 2017.
silphium, asteriscus, commonly, called, starry, rosinweed, herbaceous, plant, family, asteraceae, native, eastern, united, states, from, oklahoma, texas, east, florida, pennsylvania, widespread, species, found, variety, open, habitats, such, prairies, woodland. 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 and woodlands 4 Silphium asteriscusSilphium asteriscus var asteriscusScientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsClade AsteridsOrder AsteralesFamily AsteraceaeGenus SilphiumSpecies S asteriscusBinomial nameSilphium asteriscusL 1 Taxonomy editAdditional research is needed to better understand the taxonomy of this species It remains perhaps the most poorly understood Silphium in eastern North America 5 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 6 7 The most recent treatment from 2020 ranked Silphium asperrimum Silphium dentatum and Silphium simpsonii at species status 7 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 7 nbsp Line drawing of Silphium asteriscusReferences edit Silphium Index Nominum Genericorum International Association for Plant Taxonomy 9 February 1996 Retrieved 24 June 2008 USDA NRCS n d Silphium asteriscus The PLANTS Database plants usda gov Greensboro North Carolina National Plant Data Team Retrieved 18 January 2017 Silphium asteriscus County level distribution map from the North American Plant Atlas NAPA Biota of North America Program BONAP 2014 Retrieved 18 January 2017 Flora of North America Chester Edward 2015 Guide to the Vascular Plants of Tennessee Flora of Missouri a b c Flora of the Southern and Mid Atlantic States External links edit nbsp Media related to Silphium asteriscus at Wikimedia Commons nbsp Data related to Silphium asteriscus at Wikispecies nbsp This Heliantheae article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Silphium asteriscus amp oldid 1107616205, wikipedia, wiki, book, books, library,
