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Short-styled Thistle is an herbaceous perennial with thick, succulent, sparingly branched stems that are 4-25 dm high, and which arise from a taproot. The clasping, alternate leaves are pinnately lobed or toothed with spines along the margins. The foliage is thinly to densely covered with tangled white hairs. A few short-stalked flower heads are clustered at the tips of the stems. Each head is 2...

Western Boneset is a rhizomatous perennial herb with clustered stems that are often woody at the base and 15-70 cm tall. The alternate leaves are triangular or ovate in outline and 2-7 cm long with toothed margins. The lower leaves are reduced and early deciduous. The lower leaf surfaces have small, unstalked glands. The flowering heads are borne in an open, branched inflorescence. The involucra...