Sichuan: Rangtang (Zamtang) Xian.
N of the city of Rangtang (Zamtang) on road to Aba Xian, then E on road to Zhong Rangtang along Maierdi-anma (river), then S along stream ca. half way to Chotuo.
Broad, flat valley with a network of meandering rocky streams and marshy places, adjacent meadow, slopes with shrubs and outcropping ledges.
32°15'23"N,
101°11'39"E;
3570-3730 m.
Open, dark, rich soil at base of shrub at margin of rocky streambed.Stems red; leaves reddish or green; flowers greenish white Growing intermixed with Koenigia pilosa (n. 39145). Synonym: Polygonum glaciale (Meisner) J. D. Hooker.
David E. Boufford, Kazumi FUJIKAWA, Susan L. Kelley, Richard H. Ree, Bo XU, Da-Cai ZHANG, Jian-Wen ZHANG, Ti-Cao ZHANG, Wei-Dong ZHU
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