This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
A small genus of Chilian bulbous plants with linear nervose leaves and branched scapes of drooping blue flowers. Perianth campanulate, adhering to the base of the ovary; limb 6-parted, with spreading segments. Stamens inserted in the tube of the perianth; filaments compressed. In honour of Lady Gordon Cumming.
1. G. trimaculata. - This has deep blue flowers with a dark purple spot on each segment.