KEY TO THE SUBSPECIES

1Leaf bud, flowers including ovary, and fruits with hairs 0.5-0.8(-l) mm. Male buds 4-5 mm; androphore sparsely or densely minutely pubescent.
1'Leaf bud with long or short hairs, those of flowers including ovary and fruits short, 0.1-0.2 mm. Male buds 2.5 mm; androphore (sub)glabrous.