Viola muehldorfii Kiss.

Herbs perennial. Rhizome procumbent, yellow-brown to whitish, long, slender, with small, dry, white membranous scales, and white rootlets. Stems erect, simple, 20-60 cm tall, spreading white villous or subglabrous in lower part, usually with 1 small, white, ovate, membranous scale at base. Basal leaves 1-3, petiole to 10 cm; leaf blade cordate or reniform, both surfaces sparsely puberulous, more densely puberulous on veins abaxially, base cordate, margin serrate and ciliate, apex mucronate. Cauline leaves usually 3, rarely 4; stipules free, opposite, ovate, margin entire or glandular serrate, apex acute; petiole of lower one ca. 3 cm, densely minutely villous, blade of lower one orbicular-cordate, ca. 4 × 4.5 cm, base broadly cordate, apex acuminate; upper two short petiolate or subsessile, leaf blade of upper two at apex of stem, subopposite, ovate, both surfaces white puberulous, base shallowly cordate, apex acuminate or acute. Flowers in second leaf axil at apex of stem, golden-yellow, 1.5-2 cm; pedicels glabrous, 2-bracteolate in upper part; bracteoles broadly ovate. Sepals narrowly ovate or lanceolate, ca. 8 mm, usually glabrous, 3-veined, margin entire, basal auricles short, ca. 0.3 mm. Petals obovate, purple striate, lateral petals inside barbate at base, anterior one subspatulate, 1.5-2 cm (spur included); spur ca. 2 mm, stout, apex obtuse; spur of anterior stamens undeveloped, short, broad. Ovary glabrous; styles gradually thickened upward; stigmas capitate, with a series of white beards on each lateral side, shortly beaked in central part, with a rounded stigma hole at tip of beak. Capsule ellipsoid, ca. 7 mm, apex ± acute, usually with persistent style. Seeds glaucous, globose, ca. 2 mm in diam., with white appendage. Fl. May-Aug, fr. Jul-Sep.

Heilongjiang [Korea, Russia].

Mixed needle-leaved and broad-leaved forests, forest margins, streamsides; 300-500 m.

Viola lasiostipes Nakai.

Viola muehldorfii là một loài thực vật có hoa trong họ Hoa tím. Loài này được Kiss miêu tả khoa học đầu tiên năm 1921.

大黄花堇菜（学名：Viola muehldorfii）为堇菜科堇菜属的植物。分布于俄罗斯、朝鲜以及中国大陆的黑龙江省等地，生长于海拔200米至900米的地区，多生于针阔混交林林下、林缘腐殖质较丰富的湿润土壤上以及溪边，目前尚未由人工引种栽培。