- = Ligusticum intermedium Hook.f.
- = Anisotome intermedia Hook.f., Bot. Antarct. Voy. II. (Fl. Nov.-Zel.) Part I, 89 (1853)
- = Ligusticum lyallii Hook.f., Handb. New Zealand Fl. 95 (1864)
Robust, up to c. 7 dm. tall; stem stout, grooved, branched, on stock up to ± 5 cm. diam. Lvs on stout grooved petioles up to ± 2 dm. long; sheaths broad, membr., tapering to apex, ± ligulate. Lamina 3–6 dm. × 10–15 cm., erect or spreading, 2–3-pinnatisect or -pinnate, linear-oblong to oblong. Primary pinnae 8–10–(14) pairs, distant, broad-oblong to deltoid, (2)–5–10cm. long, coriac., often (3)–5–(10) pairs; petiolules stout, grooved, up to 3 cm. long. Secondary pinnae on petiolules up to c. 1·5cm. long, irregularly deeply subpinnately cut into linear or narrow oblong, obtuse to subacute lobes lacking hair-processes (rarely a lobe may be apiculate). Umbels several to many, compound, (2)–5–(10) cm. diam. Bracts foliaceous; sheaths c. 3–5 × 1–2 cm., open, oblong, tapering to lamina ± 3–5cm. long. Peduncles very stout, deeply grooved. Primary rays 15–20.stout, striate, unequal, ± 1–3 cm. long; involucral bracts up to 1 cm. long, lanceolate to linear-oblong, acute to acuminate. Secondary rays < the 5–10 mm. long, linear-lanceolate involucral bracts. Calyx-lobes minute, triangular; petals white with very narrow brown medial stripe. Fr.(4)–5–6–(7) mm. long, sts > rays. Mericarps strongly 5-ribbed, us. distinctly winged.
[From: Allan (1961) Flora of New Zealand. Volume 1.]
Flowering: Nov.–Jan.; Fruiting: Jan.–Mar.