87 colour photos; 1 B&W photo. Detailed text on appearance, growth habit, history, cultivation and more for the currently recognised species of Schomburgkia (22) and Sophronitis (9) together with data on synonyms, varieties and doubtful species. Also treated on the same basis are Constantia, Isabelia, Lanium, Leptotes, Pseudolaelia, Renata, Sophronitella, Loefgrenianthus, Neolauchea, Pinelia, Pygmaeorchis and Reichenbachanthus.
