How many times have you seen a greenhood or silver-back orchid by a bush trackside or stream bank and wondered what it was? Or perhaps you saw blue sun orchids in some scrubby tea-tree? Greenoods, spider orchids, sun orchids and many others are featured in this fully revised colour field guide: 124 classified species are included, but in addition. 87 yet to be named plus a number of distinct froms are explained. An additional 3 possibles close the colour section, so that about 224 orchids are covered. Among these are some names that have been rejecied in the past, but which we think warrant further consideration. Other mysteries are touched on briefly but the main aim of this field guide is for you lo identify your orchids in the field.