KEY TO THE VARIETIES

1Lobes of upper pinnae deeply lobulate; veins forming few areoles beyond those along costae andcostules
1'Lobes of upper pinnae at most crenate; additional areoles frequent below sinuses between pinna-lobes.
2Both surfaces densely short-hairy between the veins
2'Upper surface bearing scattered hairs 0.5 mm long; lower surface between veins almost glabrous