This text serves as a foundational identification and classification guide for the diverse species of orchids native to the Australian continent. The author, Roger B. Bedford, compiles botanical observations and descriptive data to assist enthusiasts and researchers in distinguishing between various orchid genera and species found within the region. The work provides a structured framework for understanding the environmental requirements and physical characteristics of these unique flora.

The subject matter points to a specialized, technical reference text intended for botanical hobbyists and regional naturalists. Its focus on systematic identification suggests a high level of utility for those seeking to document or study Australian orchid biodiversity in the field.