Chelidonium majus L.

Perennial herb. Stems slender, erect, sparsely hairy at nodes, brittle, 30–90 cm tall, arising from a branched woody stock with persistent lf bases. Lvs pinnate; lamina 5–15 × 5–12 cm; lateral leaflets in 3–(5) pairs, ovate to elliptic, obtuse, bicrenately lobed, each usually with a basal proximal ± deflexed pinnule or lobe; midrib and petiolules narrowly winged; wing expanded at bases of petiolules; terminal leaflet ternate; petiole 1/4–1/2 length of, or rarely =, lamina. Peduncles 2–10 cm long; umbels 2–6-flowered; pedicels 1–5 cm long. Sepals c. 8 × 5 mm, obovate. Petals yellow, obovate, up to 1 cm long. Capsule linear, somewhat constricted between seeds, 20–50 × 1.5–2 mm.

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

Flowering: Oct.–(Feb.); Fruiting: Oct.–(Feb.)