Augustin De Candolle wrote the descriptions for the first four volumes of Redouté's Les Liliacées. Regarding Amaryllis regina he wrote "Au milieu du brillant genre des Amaryllis, cette espéce se fait remarkuer par la beauté de sa fleur qui est très-grande et d'un beau rouge ponceau,"a beautiful clear rose.
Linn. fil. distinguished Amaryllis reginae by its shorter tube, a
feature Linnaeus did not mention. Rather, Linnaeus noted that the petals of
this species were not recurved at the base. This plate may be the
Lilium Reginae of Douglas, but I am not certain. Philip Miller
described the color of that flower as copper inclining to red.
Redoute's plate does not agree with Amaryllis reginae of the younger
Linné, which was referred to the West Indische rothe Lilie of
Seligmann (left). The plant designated by Linnaeus in 1759 (Systema Naturae ed. 10) was apparently the Cape
Linnaeus spelled the name "reginae", following Douglas's Lilium reginae. Miller, however, misread the name as "regina". This spelling was then copied in Les Liliacées.
Boris (?) photographed a plant in the mountains of southwest Mexico that agrees fairly well with Redouté's.