ronstephens's Journal

https://www.inaturalist.org/journal/baldeagle/59996

A short guide to Callirhoe in Texas
https://www.inaturalist.org/posts/54356-a-short-guide-to-callirhoe-in-texas

An examination of Research Grade Observations in the genus Callirhoe
https://www.inaturalist.org/journal/rymcdaniel/55726-an-examination-of-research-grade-observations-in-the-genus-callirhoe

Link to Nathan Taylor's
GuidesThe Weedy Species of Sandmats (Euphorbia sect. Anisophyllum) in Texas

https://www.inaturalist.org/guides/2412

Nesom, G.L. 2015. Taxonomy of Galactia (Fabaceae) in the USA. Phytoneuron 2015-42: 1–54. Published 15 Jul 2015. ISSN
2153 733X

http://www.phytoneuron.net/2015Phytoneuron/42PhytoN-GalactiaTaxonomy.pdf

https://www.austintexas.gov/sites/default/files/files/Watershed/invasive/2013_Invasives_guide_small.pdf

https://www.researchgate.net/publication/329601858_On_the_recognition_of_Passiflora_hibiscifolia_Passifloraceae_section_Dysosmia

https://www.extension.purdue.edu/extmedia/FNR/FNR_237.pdf

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."

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

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