Roots/*kelh₂-mo-kelh₂-mo-“stalk, stem, reed”Debatedplantmaterialculm, haulm, shawmAdjectival of *kelh₂- giving Latin culmus, English culm, haulm.Related Rootsbheh₂ǵ-es-“beech tree, its nut”bʰeHg-mn̥“beech tree (nominal)”bʰerdʰ-“to cut, split, separate”bʰerǵ-s-“to protect by enclosing”bʰleh₃-“to bloom, flourish, flower”bʰreg-mn̥“that which breaks, fragment”deru-“tree, wood, to be firm”dheHl-“to bloom, be green”