Comparison of D. affinis subsp. affinis (top), D. affinis subsp. borreri (middle) and D. filix-mas (bottom) pinnaeComparison of D. affinis subsp. affinis (top), D. affinis subsp. borreri (middle) and D. filix-mas (bottom) basal pinnaeComparison of D. affinis subsp. borreri (left) and D. affinis subsp. affinis (right) indusia