Bupleurum subovatum Spreng.

Erect annual herb. Stems solid, striate, smooth, up to 75 cm high. Lvs ovate, entire, shortly mucronate, usually perfoliate; upper stem lvs broader; veins numerous, radiating and anastomosing toward margin. Umbels 3–5 cm diam.; rays (1)–2–3–(4), ± equal; bracts 0–1, similar to reduced lvs; bracteoles 3–6, suborbicular, mucronate, overlapping, many-veined. Fls (10)–13–20–(22), yellow, c. 2 mm diam. Fr. ovoid-oblong, brown, conspicuously papillose, 3–5 mm long; ribs slender.

[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]

Flowering: Nov.–Mar.