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Silphium asteriscus Linnaeus var. asteriscus. Phenology: Jul-Sep. Habitat: Woodlands, roadsides. Distribution: NC, SC, s. VA, e. TN and e. KY.

Origin/Endemic status: Native

Taxonomy Comments: S. asteriscus var. asteriscus, in this narrow sense, is a taxon primarily found from the Appalachian Mountains eastward. Most records west of the Appalachian Mountains are generally referable to S. asperrimum, S. radula, or S. asteriscus var. latifolium.

Synonymy ⓘ: = Silphium asteriscus L. — Tn, Perry (1937); < Silphium asteriscus L. — F, Fl7, G, Va, W, WH3; >< Silphium asteriscus L. — RAB, S; < Silphium asteriscus L. var. asteriscus — C, FNA21, K4; > Silphium asteriscus L. var. asteriscus — SE1; > Silphium asteriscus L. var. scabrum Nutt. — SE1; ?> Silphium dentatum Elliott var. gatesii (Mohr) H.E.Ahles — RAB; > Silphium scaberrimum Elliott — S. Basionym: Silphium asteriscus L. 1753

Links to other floras: < Silphium asteriscus var. asteriscus - FNA21

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Heliophily ⓘ: 7

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image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Stephan Eselgroth, some rights reserved (CC BY-SA), uploaded by Stephan Eselgroth source CC-BY-SA | Original Image ⭷
image of plantno rights reserved, uploaded by Mason Brock source CC0 | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plantno rights reserved, uploaded by Mason Brock source CC0 | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷

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Horticultural Information

NCBG trait

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Height: 3-6 ft.

plant sale text: Starry rosinweed blooms for many weeks. It produces numerous yellow flowers, 2 to 3 inches across, on tall upright stems. This species is not often offered for sale. Starry rosinweed is particularly drought-tolerant, once its roots have are well established. This species is found growing at the edge of woods, and in old fields and pastures in the lower and middle piedmont of North Carolina.

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cultural notes:

germination code: 2

native range: southeastern United States



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