Clematis pinnata Maximowicz var. tatarinowii (Maximowicz) Kuntze.

Subshrubs erect. Branches shallowly 6-grooved, sparsely puberulous. Leaves 2-ternate or pinnate; petiole 4--6.5 cm; leaflet blades rhombic-ovate, rhombic, or ovate, 3.5--10 × 2--7.8 cm, herbaceous, undivided or 3-lobed, abaxially sparsely puberulous on midvein, adaxially sparsely appressed puberulous, base broadly cuneate, margin sparsely dentate, apex acuminate; basal veins abaxially prominent. Cymes axillary or terminal, 5--7-flowered; peduncle 3--4.8 cm; bracts linear-lanceolate to narrowly rhombic, 3--4 mm, undivided or 3-lobed. Flowers 0.9--1.1 cm in diam. Pedicel 1.2--3 cm, puberulous. Sepals 4, erect, obovate-oblong, 11--16 × 4--5 mm, abaxially densely appressed puberulous, adaxially glabrous, margin abaxially velutinous, apex ± obtuse. Stamens 8--10 mm; filaments with a few short hairs near apex; anthers narrowly oblong, 2--3 mm, abaxially with a few hairs on connective, apex obtuse or obscurely minutely apiculate. Ovaries pubescent. Style ca. 4 mm, densely villous.

* Mountains. Beijing Shi.