Trollius altaicus C. A. Mey.

Plant 20-75 cm. Roots tufted. Basal leaves long-petiolate 5-7 partipalmate, lobes incised, serrate. Stem leaves sessile, smaller. Flowers large, 4-5 cm diam., golden yellow or orange with dark centre (because of dark purple stigmas). V - early spring to early autumn, in St. Petersburg April-September. Fl - May. Fr - July. P - by division and by seed. In partial shade and in full sun. Z 3 (2). New.

Stems 26--70 cm tall, simple. Basal leaves 2--5; petiole 7--36 cm, base narrowly sheathed; leaf blade not green when dried, pentagonal, 3.5--6 × 6.5--11 cm, base cordate, 3-sect; central segment rhombic, 3-lobed, ultimate lobules dentate; lateral segments obliquely flabellate, 2-fid nearly to base. Cauline leaves similar to basal ones. Flower solitary, 3--5 cm in diam. Sepals (10--)15--18, orange, not green when dried, obovate or broadly obovate, 1.6--2.5 × 0.9--2 cm, apex rounded. Petals linear, shorter than or subequaling stamens, 6--13 × ca. 1 mm, narrowed at apex. Stamens 0.7--1.3 cm. Styles dark purple or black. Follicles ca. 16, ca. 1 cm × 3.5 mm; persistent style ca. 1 mm. Seeds ellipsoid-globose, ca. 1.2 mm. Fl. May--Jul, fr. Aug. 2n = 16.

Siberia (Altay), Central Asia (Dzungarskiy Alatau, Tarbagatay, Pamiro Alay, Tien Shan), northwestern China and western Mongolia. In mountain upper forests and meadows in the alpine zones, at 900-2,000 m.

W Nei Mongol, N Xinjiang [E Kazakhstan, Kyrgyzstan, Mongolia, Russia (Siberia), ?Tajikistan, Uzbekistan].

Grassy slopes, wet places in valleys; 1200--2700 m.

Trollius altaicus is an ornamental plant of the family Ranunculaceae, which is native of Asia and Europe. This plant usually grows in wet places, specially in valleys.