Daisy family (Asteraceae) ⁵

Summary ⁶

Symphyotrichum pilosum, commonly called the hairy white oldfield aster or frost aster, is an herbaceous plant in the aster family.

Recognition ⁵

•White flowers with 15-30 rays, 1.3 to 2 cm across.
•Hairy stem
•Leaves 2-10 cm, small at top, longer and wider at bottom.
•Bunches of small leaves often grow above base of larger leaves.

Similar species ⁵

There are several similar species of white asters. Symphyotrichum ericoides has smaller leaves and broader bracts on the side of the flower head. Symphyotrichum lanceolatum has narrower leaves and smooth stems.

Learn more ⁵

Illinois Wildflowers.

Sources and Credits

1. (c) Mallory F, some rights reserved (CC BY), uploaded by Mallory F, https://www.inaturalist.org/observations/93938742
2. (c) Douglas Goldman, some rights reserved (CC BY), uploaded by Douglas Goldman, https://www.inaturalist.org/observations/108322555
3. (c) emuviking, some rights reserved (CC BY), uploaded by emuviking, https://www.inaturalist.org/observations/178986402
4. (c) Barbara Katzenberg, some rights reserved (CC BY), uploaded by Barbara Katzenberg, https://www.inaturalist.org/observations/140171954
5. (c) Isaac Winkler, some rights reserved (CC BY-SA)
6. Adapted by Isaac Winkler from a work by (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Symphyotrichum_pilosum

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Calflora
• CalPhotos
• eFloras.org
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• Go Botany
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Jepson eFlora
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
• NBN Atlas
• SEINet Symbiota portals
• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online
• 日本のレッドデータ検索システム
• 植物和名−学名インデックス YList

iNat Map