Eastern Mojave Vegetation Coll. No. 3506, Symphyotrichum porteri  
 

 

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If you have a question or a comment about this photograph you may write to me at: tomas@schweich.com I sometimes post interesting questions in my FAQ, but I never disclose your full name or address. 		  Asteraceae, Symphyotrichum porteri
Photographed 30 November 2025.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County
Asteraceae

Symphyotrichum porteri (A. Gray) G.L. Nesom.  Smooth White Aster.

Twin Creek, Jefferson County, Colorado. About 7 miles west and south on F. R. 211 from its north end at County Road 126 to a USFS designated parking place, then about 200 m. generally west on old roads into the Twin Creek drainage, 11.8 km. southwest of Deckers. 39.20456°N, 105.34724°W. WGS 1984 Elev. 2389 m. Southwest facing slope. Also here: Artemisia frigida, Senecio spartioides, Cercocarpus montanus, Verbascum thapsus, Bouteloua gracilis, and Eriocoma robusta.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3506. 3-Sep-2025

FNANM distinguishes this from S. pilosum by its lack of axillary clusters of leaves, yet these specimens have those axillary clusters.

Article records that use this photograph:

Other photos about Species - Asteraceae or Symphyotrichum porteri.

 

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Date and time this page was prepared: 4/4/2026 8:05:07 PM