展枝翅瓣黄堇 zhan zhi chi ban huang jin

Type: Myanmar. N Triangle (camp II, Tama Bum), alt. 7000-8000 feet, "weak stemmed herb growing several feet tall. Leaves like Thalictrum, flowers bright yellow. By streams in the forest forming colonies," 16 Jun 1953, F. Kingdon Ward 20987 (holotype, A).

A ceteris varietatibus ramis manifeste divaricatis calcaribus breve et late oblongis differt.

Plant with widely spreading branches. Flowers 16-21 mm. Upper petal with crest; spur broad at apex; nectary ca. 3/4 as long as spur.

By streams in forests; 2100-2500 m (in Myanmar). W Yunnan (Gaoligong Shan) [NE Myanmar].

The varietal epithet refers to the widely spreading branches, from Latin divaricatus ("spreading apart at a wide angle").