Compilation
Zanthoxylum macrophyllum

Tree 10–30 m. tall; trunk usually with aculeate bosses; branches glabrous, aculeate; aculei 2–5 mm. long, conical, reddish. Leaves 20–60 cm. long; petiole 3–15 cm. long, broadly channelled or flat above at the base; rhachis 2–4 mm. in diam., terete; leaflets coriaceous, with petiolules 2–7 mm. long, alternate or subopposite; lamina (5·5) 8–17 × 3·5–5·5 cm., broadly elliptic to elliptic, gland-dots almost inconspicuous, attenuate or abruptly acuminate and obtuse at the apex, margin entire or slightly crenulate, very asymmetric at the base; lateral nerves 8–14 pairs. Flowers not seen from our area. Infructescence of rather stout terminal and sometimes also axillary panicles, up to 20 × 14 cm. Fruit 3·5 mm. in diam., sessile or subsessile or shortly stipitate, subglobose, glandular-foveolate, with a very small 5-lobed persistent calyx. Seed 2 mm. in diam., globose, black, shiny.