An Identification guide to Ireland’s grasses was published by the Data Centre in late 2014. It is a field-friendly 164 page guide that simplifies grass identification. It is rich in photographs and diagrams and contains both a floristic guide and a vegetative key. It will help you identify up to 100 Irish species.
The guide can be purchased online for €15 or by contacting the Centre at firstname.lastname@example.org for bulk orders.