Asteraceae

Starry rosinweed

Silphium asteriscus L.

Family: Asteraceae
Genus: Silphium

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Starry rosinweed (Silphium asteriscus) — FlowerPhoto: Jay Horn, CC BY 4.0, from iNaturalist

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Common names

By language (1)

English: Starry rosinweed

Synonyms

Silphium asteriscus subsp. asteriscus
Silphium dentatum var. gatesii (C.Mohr) H.E.Ahles
Silphium gatesii f. gatesii
Silphium integrifolium var. gattingeri L.M.Perry

Flowers

In flower: June to August (from 361 flowering iNaturalist observations worldwide)

Characteristics

Growth habit: Forb/herb
Lifespan: Perennial
In the US and Canada: Lower 48 states: native

Photos

FlowerPhoto: Jay Horn, CC BY 4.0, from iNaturalist
FlowerPhoto: Brandon Wheeler, CC0, from iNaturalist
FlowerPhoto: Celeste Ray, CC BY 4.0, from iNaturalist
FlowerPhoto: Jessica, CC BY 4.0, from iNaturalist
Photo: James H. Miller, USDA Forest Service, Bugwood.org, CC BY 3.0, from Wikimedia Commons
Photo: camdenwhitlock3, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: cwarneke, CC0, from iNaturalist
Photo: KATHERINE WAGNER-REISS, CC BY-SA 4.0, from Wikimedia Commons
Photo: Brooke Hullings, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: sblumen, CC BY 4.0, from iNaturalist
Photo: KATHERINE WAGNER-REISS, CC BY-SA 4.0, from Wikimedia Commons
Photo: charles hightower, CC BY-SA 4.0, from Pl@ntNet via GBIF

More in Silphium

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.