Rough Sheath Leaf sheath and axil of homozygous Rs4-N1606 mutant plant, showing coarse corrugation of leaf sheath extending across leaf axil to leaf blade, which has spots of lighter green irregularly formed midvein tissue (photo courtesy R. Bird)

Rough Sheath Section of Rs*-N1606/+ heterozygous mutant plant showing corrugated vascular bundles on leaf sheath and abnormal development of auricle and blade at leaf axil