Description: This is a very local species of rocky mountain streamsides and is currently only known from the Upper Bann below the Spelga Dam, where it grows on granite outcrops.

All names: Hieracium stewartii (F.Hanb) Roffey; Hieracium friesii var. stewartii F.Hanb; Hieracium ardaricum Pugsley; Hieracium backhouseanum auct, non (Zahn) Roffey; Hieracium donegalense Pugsley; Hieracium hartianum Pugsley; Hieracium longiciliatum (F.Hanb) Roffey

Distribution Map from NBN: Hieracium stewartii at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Hieracium stewartii at iNaturalist World Species Observations database.