Ainus Miller

2. Ainus Miller 1

Trees or shrubs. Catkins with 2 bracteoles to each group of flowers in the axil of each bract. Male flowers with 4 stamens and 4(-5)-partite perianth; anther-lobes somewhat separated by the shortly forked connective. Female flowers 2 in axil of each bract. Fruiting catkin cone-like, ovoid or ellipsoidal, the scales 5-lobed, thick and woody, long-persistent.

1 Buds sessile; catkins appearing with the leaves, in inflorescences with 2-3 leaves at base 1. viridis 1 Buds shortly stalked; catkins appearing before the leaves, without leaves at the base of the inflorescence

2 Inflorescence with 1-3 female catkins; leaves crenate-dentate

5. cordata 2 Inflorescence with 3-8 female catkins; leaves serrate or laciniate

3 Leaves serrulate or slightly biserrate, with red-brown hairs at least in the axils of the veins 3. rugosa 3 Leaves distinctly biserrate, glabrous or with yellow or grey hairs

4 Leaves obtuse or retuse; young twigs viscid; bark dark brown, fissured; female catkins distinctly pedunculate

2. glutinosa 4 Leaves acuminate to subacute; young twigs not viscid; bark grey or yellowish, smooth; female catkins ±sessile 4. incana