Citrus ×sinensis (L.) Osbeck

Glabrous tree to c. 10 m high with rather rounded crown and angular shoots. Spines confined to trunk, main branches and strong young vegetative shoots. Lvs strongly orange-scented. Petiole 1–2.5 cm long, narrowly winged, articulate at apex. Lamina 7–15 × 3.5–7 cm, elliptic or elliptic-ovate, entire or slightly crenulate; apex usually short-acuminate. Fls 1-few in the axils, fragrant. Calyx 3–4 mm long; lobes broad-ovate. Petals c. 2.3 cm long, elliptic, white. Stamens > 20. Fr. 5–7 cm diam., ± globose, 10–13-celled; exocarp (peel) bright orange, dotted with oil glands, c. 1 cm thick; pulp very sweet, orange; core of axis solid.

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

Flowering: Jan.–Dec.