Hoplophyllum ferox Sond.

Rigid shrubs, with pungent, linear-or subulate leaves. Heads sessile, axillary or terminal. Leaves flat, with spinous, marginal teeth; heads solitary; involucral scales powdery. Heads few-(5-6) flowered, homogamous. Involucre ovate-oblong, closely imbricate, its scales broad, obtuse, spinous-mucronate, scarious or horny. Receptacle narrow, fimbrilliferous. Corolla glabrous, tubular, deeply and equally 5-cleft, the lobes linear. Filaments smooth. Anthers linear, sagittate. Stigmata 2, filiform, very long, bristly throughout. Achenes thick, subtrigonous, densely hairy, slightly contracted under the pappus. Pappus in many rows, persistent, scabrous, the outer paleae bristle-shaped, the inner subulate-acuminate. Subglabrous; leaves spreading, linear-mucronate, flat, armed with 1-2 pairs of spinous, marginal teeth, furrowed; invol. scales ovate, strongly mucronate, dorsally glauco-pulverulent; heads terminal, solitary sessile.