Vascular Plants of the Gila Wilderness

Presented in Association with the
Western New Mexico University Department of Natural Sciences

Ageratina herbacea (Gray) R.M. King & H.E. Robinson
(White Thoroughwort)

Family: Asteraceae

Status: Native

Eupatorium arizonicum Greene
Eupatorium herbaceum (Gray) Greene

Ageratina herbacea has only white disc flowers, no ray flowers to create a "daisy" appearance. The flowers are mainly in groups at the end of stems. This appearance is similar to the Brickellias. However, the leaves of Ageratina are nearly triangular in shape and strongly toothed along the edge. In addition, the leaves are deeply veined. The veins are nearly parallel and mostly palmate from the leaf base except for some peripheral vein branching. Ageratina is found in forested areas.
Please click on an image for a larger file.

Ageratina herbacea, photo Russ Kleinman, Bill Norris and Mark Donnell, Mogollon Mtns., Bursum Road, Aug. 4. 2007

Ageratina herbacea, inflorescence, photo Russ Kleinman, Pinos Altos Range, Ben Lilly, Oct. 5, 2008

Ageratina herbacea, in fruit, photo Russ Kleinman, Pinos Altos Range, CD Trail above the Arrastra, Oct. 21, 2008

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