Xanthisma spinulosum var. gooddingii (Rydb.) D.R.Morgan & R.L.Hartm.

Subshrubs, 70–100 cm, often woody in proximal 1 / 3 +. Stems erect to spreading, branched in distal 2 / 3 ; mid internodes 5–20+ mm. Leaves relatively sparse, crowded proximally, widely spreading, little reduced distally, margins pinnatifid to 2-pinnatifid, lobes often linear, 3–15+ mm, mostly entire, faces glabrous or sparsely hairy, stipitate-glandular. Heads mostly borne singly. Peduncles 2–15+ cm, bracteate. Involucres 15–25 mm wide. 2n = 8, 16.