Hope I'm in the appropriate forum! I've been trying to identify a weed that is similar to Largeleaf Avens Geum macrophyllum. Willd. I should have photographed both plants in the flowering stage...oh, well. The mystery plant (pic #1) has a hollow main stem unlike the fibrous Avens stem (pic #2). Both have yellow flowers with the Avens somewhat larger and both develop burr-like seed pods. The Avens again has bigger burrs. I have taken photos of both seed pods to compare. Hope someone out there can help me.
It might be G. macrophyllum var. perincisum or just a variation of var. macrophyllum. Also find out if there are any Filipendula species native to your area.
