1.1b. Chamaenerion angustifolium (L.) Scop. subsp. circumvagum (Mosquin) Moldenke.

≡ Epilobium angustifolium L. subsp. circumvagum Mosquin. ≡ Chamerion angustifolium (L.) Holub subsp. circumvagum (Mosquin) Hoch (1999: 241) .

Type:— UNITED STATES OF AMERICA. Colorado: Canyons on Green Mt., Summit Co., 6500–7000 ft, Daniels 268 (holotype MSC59114) (Chen et al. 1992) .

Distribution: —Widely distributed in the Pan-Himalaya region.

Note: —This subspecies is often distributed in the lower elevation area of the same localities as Chamaenerion angustifolium subsp. angustifolium .