Shrubs, 30–250 cm. Stems usually sparsely tomentose or pilose. Leaves sessile; blades oblong or oblong-obovate to widely obovate, 13–35(–50) × 5–17(–24) mm, coriaceous, bases clasping to subclasping, margins spinulose-dentate (teeth in 3–13 pairs), adaxial faces glabrous to sparsely puberulent. Heads borne in racemo-spiciform or glomerate-spiciform arrays. Involucres turbinate, 8–16 × 7–10 mm. Phyllaries apically spreading to reflexed, oblong, apices with green area 1–2 mm, faces prominently stipitate-glandular (at least apically). Ray florets 0. Disc florets 9–30; corollas 9–11 mm. Cypselae 5–8 mm, glabrous.

Distribution

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• Legacy Map

Calif., nw Mexico.

Discussion

Varieties 3 (3 in the flora).

Selected References

None.

Lower Taxa

Hazardia squarrosa var. grindelioides, Hazardia squarrosa var. obtusa, Hazardia squarrosa var. squarrosa

Key

1	Leaves sparsely puberulent, not resinous; involucres 8–12 mm; disc florets 9–16, corollas 9–10 mm	Hazardia squarrosa var. grindelioides
1	Leaves glabrous or sparsely puberulent, resinous; involucres 11–15 mm; disc florets 18–30, corollas 10–11 mm	> 2
2	Stems glabrous or scabrous; phyllaries erect, ± obtuse-mucronate, glabrous, resinous	Hazardia squarrosa var. obtusa
2	Stems distally sparsely hairy or glabrescent; phyllaries recurved, obtuse to acute, glandular	Hazardia squarrosa var. squarrosa