Clematis serratifolia Rehder

Woody climber. Leaves divided twice into 3 toothed leaflets that are up to about 7 cm long. Flowers nodding in axillary 3-flowered clusters; summer. Perianth segments 4, to 2.5 cm long, spreading, slightly hairy inside only and on the margins, yellow. Styles persistent, feathery.

Korea

Source: Gubbins, B.; Spencer, R. (1997). Clematis. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Ranunculanae
order      Ranunculales
family       Ranunculaceae
genus        Clematis L.