A  Crinum zeylanicum L. x Crinum Macleayi hybrid.  The latter is unidentified but is probably a form of one of the native Australian species, Crinum flaccidum Herb. or Crinum pedunculatum R.Br.

In 1845 and 1846 William Macarthur described ten Crinum scabro-macleayii hybrids in his gardening notebooks.  [MP A2948 Notebook no.4, p.4].

No.1.  Bulb round without a column.  Leaves pale green, 12-14 in number, 3 feet long (3½ feet in 1846), 2-2½ inches broad, nearly recumbent.  Scape 2 feet long, green with a little purple.  Flowers 10-12 (in 1846), 6 inches in diameter.  [Word unclear but probably] Ovaries green, hardly pedunculated, tubes 3 inches, petals nearly ovate in form (1846, petals longish), from 3-3½ inches long, 1-1¼ inches wide, pure white with a stripe of rosy pink down the centre, inside delicately pencilled off to a point with the tips [this part unclear].  Stamens white, stigma purple, one inch longer than the stamens and the same length as the petals, the whole grouped as in C. scabrum.  Pollen and anthers white.