R. bergii Davidian
Leaves evergreen; petioles with hairs of two kinds, filiform-acicular as well as loriform; corolla reddish purple.
Distribution China (NW Yunnan).
Awards AM 1978 (R.N.S. Clarke, Borde Hill, Sussex) to a clone R. bergii ‘Papillon’; flowers red-purple, paler at rim, with darker bars on reverse, spotted.
Taxonomic note (R. augustinii Hemsl. var. rubrum Davidian & incl. R. bergii Davidian)