Nort.bell

N.northiana x bellii

Nort(campa.rob)

N.northiana x (campanulata x robcantleyi)

Nort[(low.veit)bos]

N.northiana x [(lowii x veitchii) x boschiana]

Nort[(low.veit)campa]

N.northiana x [(lowii x veitchii) x campanulata]

Nort.merr

N.northiana x merrilliana

Nort.suma

N.northiana x sumatrana

Nort.trun

N.northiana x truncata