I dare say he meant the dictamnus fraxinella, which is sometimes luminous.
"Old Calabria"
Norman Douglas
See page 26. dictamnus-Gas Plant Fully described on page 32. Digitalis-Foxglove The form usually grown is treated as a biennial, and with me, must be coldframed the first year.
"Making a Garden of Perennials"
W. C. Egan