Stock very stout, woody, multicipital, bearing crowded rosettes up to 15 cm. diam. and 20 cm. tall; the whole plant forming cushionlike masses up to ± 6 dm. diam. Lvs extending along base of stem.; sheaths membr., c. 4 × 1·5 cm., narrowing to c. 1 cm. at apex; stipules c. 35 × 5 mm., narrowing to small mucro; petioles and internodes very short; pinnae 2–3 pairs, linear-oblong, ± 3 cm. × 3–4 mm., with slightly thickened yellowish margins and apex with pungent mucro. Stems grooved, ± 25 × (2)–4–5 cm.; upper nude part rather slender. Infl. ± globose head of compound umbels; involucral bracts with thick sheaths up to ± 2 cm. long and lflike stipules and lamina. Primary umbels us. several. c. 2.5 cm. diam., secondary on almost filiform rays.
[From: Allan (1961) Flora of New Zealand. Volume 1.]