Key for Sorocea St. Hil.

1Blade ± distinctly hairy beneath and usually scabrous to scabridulous above: bracts membranous.
1'Blade glabrous or sparsely puberulous on the primary vein above; bracts subcoriaceous.
2Stipules 0.5-1.2 cm long; petiole (0.5-)0.8-1.6 cm long; staminate intlorescences up to 12 cm long; pistillate inflorescences 3-5 cm (in fruit uo to 9.5 cm long): fruiting perianth 1-1.7 cm in diam.
2'Stipules 0.2-0.4 cm long; petiole 0.2-0.7 cm long; staminate inflorescences up to 4.5 cm long; pistillate inflorescences 0.5-1.5 cm (in fruit up to 4.5 cm long); fruiting perianth 0.5-0.8 cm in diam.
3Tepals of the staminate flower glabrous outside; upper part of the perianth of the pistillate flower distinctly broader than the lower part; fruiting perianth.
3'Tepals of the staminate flower minutely puberulous outside; upper part of the perianth of the pistillate flower almost as wide as the lower oart: fruiting oer- tianth cylindrical to narrowly ellipsoid.