The Myrtle order holds a couple of families that have in them the Fireweeds and Evening Primroses amongst others

Brimstone on Lythrum

Brimstone on Lythrum

Lythraceae

Lythrum salicaria 'Blush'
Oenothera fruticosa 'Camel'

Oenothera fruticosa ‘Camel’

Onagraceae

Epilobium angustifolium 'Album' (Chaemerion angustifolium 'Album')
Gaura lindheimeri ‘Freefolk Rosy’
Oenothera stricta 'Sulphurea' (odorata)