KEY TO THE VARIETIES

1	Caudex to 150cm tall; lower surface of pinnae lacking glands between veins Sphaerostephanos hispiduliformis var. hispiduliformis
1'	Caudex short; lower surface of pinnae between veins copiously glandular. 2
2	Fronds to 90 cm long; pinnae to 14 x 1.5 cm; hairs on lower surface of costae 0.1 mm long Sphaerostephanos hispiduliformis var. vinkii
2'	Fronds to 40 cm long; pinnae to 5 x 1 cm; hairs on lower surface of costae 1 mm long Sphaerostephanos hispiduliformis var. brassii