Article from Bean's Trees and Shrubs Hardy in the British Isles
Recommended citation
'Yua thomsonii' from the website Trees and Shrubs Online (treesandshrubsonline.
A slender, deciduous climber; young stems slightly downy at first, ribbed. Leaves composed normally of five leaflets, borne on a slender downy stalk 11⁄2 to 41⁄2 in. long. Leaflets oval or obovate, 1 to 4 in. long, 1⁄2 to 11⁄2 in. wide; slenderly pointed, the upper half shallowly but sharply toothed, the base entire and tapered to a stalk, 1⁄8 to 3⁄4 in. long; undersurface sparsely downy on the midrib, glossy. The entire leaf, leaf-stalk, and young shoots are of bright claret purple when young, becoming greenish purple later, changing finally to deep reddish purple. Flowers in cymes on a slender stalk.
A native mainly of W. and Central China, but described from a specimen collected in the Khasia Hills, Assam; introduced by Wilson from China in 1900, when collecting for Messrs. Veitch. It was awarded a First Class Certificate three years later and is, indeed, one of the most charming of the vines. Decidedly hardier than Parthenocissus henryana, with which it was formerly associated.