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Calculated leaf area (length x width) and directly measured leaf area (from leaf area meter) of the main and secondary shoots of screenhouse-grown speargrass from the derived (DS, Ibadan), southern Guinea (SGS, Ilora) and northern Guinea (NGS, Bida) savanna agro-ecozones in Nigeria, were compared using regression analysis to determine coefficients for estimating leaf area from linear leaf measurements. Leaf length, leaf width and actual leaf area were measured in non-senescent fully-expanded leaves, randomly selected from 14 week-old speargrass developed from 2 cm rhizome sections. Calculated leaf area and directly measured leaf area were on the average significantly (P