Lady Bird Johnson Wildflower Center - The University of Texas at Austin

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Delphinium trolliifolium

Delphinium trolliifolium A. Gray

Columbian Larkspur, Cow Poison

Ranunculaceae (Buttercup Family)

USDA Symbol: DETR2

Delphinium trolliifolium (Columbian larkspur) #183843

Image Information

Photographer: Machi, Mary Ann
County: Humboldt
State: CA
Location Notes: Along Bald Hills Road approximately 0.7 miles northwest of Lyons Ranch Trailhead (approximately 16 miles southeast of US Highway 101.
Accession date: 2025-08-15
Filename: MAM_IMG0178.JPG
Slide Index: DETR2 (1)
Restrictions: Unrestricted
Collection: Wildflower Center Digital Library
Original Format: Digital
Orientation: Landscape
Shot: Flowering plants.
Date Taken: 2025-05-19
NPIN Image Id: 183843

Image Verification

This image has been verified.
By: Joseph A. Marcus
Date: 2025-08-15

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Additional resources

USDA: Find Delphinium trolliifolium images in USDA Plants
Google: Search Google Images for Delphinium trolliifolium