1 "Calyces with numerous small, dark red dots; follicles thin-walled, opening up completely at maturity, with irritating hairs all over the inner surfaces" "Sterculia stenocarpa" 1 "Calyces without small red dots; follicles thick walled, only partly opening at maturity, with irritating hairs on the placentas only" 2 2 "Mature leaves 6-15 cm long, 5-13 cm wide; petioles (1.5-)3-10 cm lng; flowers in racemes about 3-12 cm long; follicles longitudinally ribbed, not rough; seeds 9-11 mm ling, 5-6 mm wide" "Sterculia africana" 2 "Mature leaves 1-4.5(-6) cm long, 0.7-5(-8) cm wide; petioles up to 2 cm long; flowers in racemes 0.2-1.5(-2) cm long; follicles rough; seeds (11-)12-15 mm long, 8-10 mm wide" "Sterculia rhynchocarpa"