Favoritos de brothernorbert

I’m not sure if this is Bird’s foot trefoil or Greater Bird’s foot trefoil.

Red Rock Canyon Park

Covered in glandular hairs; leaflet margins have long sharp teeth (Wildflowers of OC and the Santa Ana Mountains)

A nice patch in an area that burned last year.

Exkursion "Die Flora des Machfeldkanals und der Schwarzlackenau", Verein zur Erforschung der Flora Österreichs

Xanthium strumarium s. str. sensu Fischer et al./EfÖLS (2008); Graurinderkoppel

I've been seeing more of this in Monroe County in the last decade or so, at least in public areas.

Pic 2 shows 3-part calyx lobes