Deinandra fasciculata

Deinandra fasciculata, the clustered tarweed or fascicled tarplant, is an erect annual herb of the Asteraceae endemic to California and Baja California, growing on dry hillsides, grasslands, and disturbed openings in coastal scrub and chaparral. Plants reach 20–100 cm with slender, much-branched stems that are glandular-pubescent above and bear a strong, sticky, resinous odour. Lower leaves are opposite, linear to narrowly oblanceolate, 2–8 cm long, often pinnately lobed and bristly; upper leaves alternate, reduced, entire, and densely glandular. Heads are arranged in flat-topped clusters at branch tips; each radiate head is 5–10 mm wide with 5 yellow ray florets, each 3-lobed, surrounding 6 yellow disc florets. Phyllaries are 5, enclosing the ray achenes individually. Disc achenes are black, glabrous, and lack a pappus; ray achenes are 3-angled. Flowering occurs April–July. The plant is a typical California spring tarweed of open clay soils.