Plants in seed were collected initially from the hills above Lhasa and it wasn't until Ward (#6094), collected on the Nambu La in flower, was there more information about this species. The Ward specimen was referred to as P. waltonii by Smith and Ward. Later Stapf published P. sikkimensis microdonta which he subsequently elevated to the species P. vinosa and associated with Ward 6094. Although I haven't been able to view original documents, circumstantial evidence suggests the type location is behind the Drepung monastery near Lhasa and the first few images are from this location. The Flora of Bhutan indicates that this species may be mixed with yellow flowered plants suggesting that it hybridizes with P. sikkimensis or may be a subspecies of P. sikkimensis. The last image shows a hybrid swarm. P. waltonii may have flowers of pink to dull lilac to deep wine purple but always exhibit a band of white or yellowish farina within, leaving the throat bare. Leaves are efarinous, elliptic-oblong to oblanceolate, rounded at the apex, cuneate-attenuate at the base and with an erose-dentate to sharply serrate margin. The original spelling of the species name was published as 'Primula waltoni' but has been corrected to the code as 'Primula waltonii'.