Caption:
One-colored catasetum orchid, Catasetum purum. Native to Brazil, plants sent by Bell Edward Lloyd to Miss P. S. Falkner of Fairfield. Greenish-flowered catasetum, Catasetum semiapertum. Handcoloured copperplate engraving by Joseph Swan after a botanical illustration by William Jackson Hooker from his Exotic Flora, William Blackwood, Edinburgh, 1827.