ronstephens's Journal

Gutierrezia texana
G. texana is much more common in the area than either Amphiachyris species.

For reference:
https://www.inaturalist.org/journal/rymcdaniel/28366-differentiation-of-gutierrezia-texana-and-amphiachyris-species-in-north-central-texas

False Foxgloves (Agalinis) produce attractive, purple blossoms in late summer through fall. The distribution of these species are poorly documented, so our observations can help with that. There are several species in Texas that are quite similar yet unique in subtle ways.

Here's a guide that I put together as an attempt to note distinguishing features: https://docs.google.com/presentation/d/1jQ4yVFHhCZ2Yhy7v_Z3ngp-tZIvOKN3UtCBm0mOBbg4/edit?usp=sharing

source
https://www.inaturalist.org/journal/rymcdaniel

"The most convenient way for observers to differentiate the two genera in north central Texas is by observation of the phyllaries."