R. iteaphyllum Hutch.
Leaves 10-16mm broad. Royal Horticultural Society (1997)
AM 1960 (Royal Botanic Garden, Edinburgh); flowers white, pale orange in throat internally, slightly pink-stained externally. AM 1979 (Mrs E. Mackenzie, Fressingfield, Norfolk) to a clone 'Lucy Elizabeth', as R. iteaphyllum. Flowers in trusses of 2-3; corolla white, flushed yellow, white in upper throat. AM 1988 (P.A. Cox, Glendoick) to a clone 'Khasia', from Cox and Hutchison 320; trusses 3-4-flowered, corolla white, with slight flush of greyed yellow in throat, strongly fragrant. AGM 199
Those forms with linear leaves have been referred to R. iteaphyllum. However, in the wild there is a complete gradation between these forms and those that match the type of R. formosum. Royal Horticultural Society (1997)