Grass species used in the study.

Grass species (family: Poaceae) used in this study, with information on the origin, seed mass, photosynthetic pathway and longevity of each species. Average seed mass was obtained by oven drying 50 seeds from each species at 60°C for 48 hours and then weighing them. Data on taxonomy, physiology and longevity were obtained from PlantNET (www.plantnet.rbgsyd.nsw.gov.au).