A few plants In shady regions
Naturalised in cracked pavement. This species had been cultivated for some years in the vicinity. It persisted as a naturalised plant for about five years before completely dying out.
I'm adding the gorse behind it as a separate observation.
A few plants on a low floodplain gravel bar.
Listed as a noxious weed in several states. Not mapped in Travis County by BONAP or the USDA Plants database, but Carr (2004) published one collection and calls it "relatively rare in our area".
Senecio /sɨˈniːʃi.oʊ/ is a genus of the daisy family (Asteraceae) that includes ragworts and groundsels. The flower heads are normally rayed, completely yellow, and the heads are borne in branched clusters. Senecio is one of the largest genera of flowering plants, and despite the separation of many species into other genera it still contains c. 1250 species of varied form, including leaf, stem and tuber succulents, annuals, perennials, aquatics, climbers, shrubs and small trees. Some species produce...