I have no confidence with my plant ID. It is just a guess. This is a four foot non-woody but stiff stalked shrub. It is growing close to the river among narrow leaf willows in gravel. Behind is bare gravelly ground. It is isolated from others of its kind. The elevation is 300 feet. It flourishes with these bright yellow flowers.
Pima County, Arizona, US
possible Texas groundsel. May TX west Side road
Sorry about the poor photo quality. The light was fading and the camera was borrowed. The leaves remind me of woolly sea-side sunflower (Eriophyllum staechadifolium ), but the flowers aren't right.
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...