40 seeds Clematis tangutica.
In nature the species range covers Central Asia, Mongolia, Western China. Clematis tangutica grows on rocky slopes, scree, pebbles of river valleys of the upper belts.
Woody vine up to 3 m. Stems angular-ribbed, reddish, branched, climbing or straight, pubescent in youth, later naked. Leaves pinnate, glabrous, light green; leaflets from oblong-lanceolate to lanceolate, 3-8 cm long, the edges serrate or incised, sometimes deeply 2-3-lobed (ultimate proportion is larger than the lateral).
Flowers solitary, with a diameter of 3 cm, terminal or axillary, on long pedicels, pale yellow or Golden yellow, broadly in the beginning, later widely open. Achenes compressed, pubescent, 2-3 mm long, 1.5 mm wide, with pinnate pubescent beak length of about 2.5 cm. Flowering in June - July, fall is often observed secondary bloom. Fruiting in August - September.
USDA zone 3.