The unique Caesia variety of this species - found only around Molteno in the Eastern Cape - has milky-green leaves and bright yellow flowers.
The largest genera in the group are Dianella (with 20 species), Hemerocallis (15), and Caesia (11).
The collection now consists of 30 cabinet drawers containing 283 species of macrolepidoptera, including the first recorded specimen of the noctuid moth Dianthoecia caesia taken in Scotland and some other surprises.