 The leaf surfaces are glabrate to hairy and are usually eglandular, though they may sometimes be stipitate-glandular.The capitula, or flower heads, are radiate and typically appear in corymbiform arrays, but in rare cases they may be borne singly.The involucres, the bracts at the base of the flower heads, are cylindro-campanulate, meaning bell-shaped, to broadly campanulate and measure from 4 to 14 and exceptionally to 16 mm long by 4 to more than 25 mm wide.