Subshrubs, silvery-gray to white. Leaf blades 1-pinnately lobed, 10-20(-40) × 1-3(-5) mm. Peduncles 3-6 cm. Phyllaries carinate, apices of inner rounded, ± lacerate to fimbrillate. Corollas 3-4 mm, gland-dotted. Cypselae 2.5-3 mm, angles sometimes narrowly winged. 2n = 18. Flowering Mar-Oct. Disturbed sites, abandoned plantings; 0-400 m; introduced; Ark., Calif., Ga., La., Mass., N.C., S.C.; s Europe; n Africa. Santolina chamaecyparissus is widely cultivated and probably persists in the flora area in states other than those listed here.
Tomentose-puberulent subshrub 1-3 dm; lvs 3-10 mm, pinnatifid, with crowded narrow rounded segments, sometimes more elongate, to 3 cm, with more distant segments; heads solitary or few on naked peduncles, the disk 5-12 mm wide; cors conspicuously exceeding the invol; 2n=ca 45. Native of s. Europe, cult. for ornament, and established in waste places near Boston. Oct.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.