November 29, 2021 by mgnvmmfCulm_Chasmanthium_latifolium_Leaf_Sheath_open_July_MMF A culm of native Chasmanthium latifolium (river oats) showing leaf blade and open sheath. Photo © Mary Free About mgnvmmf Previous Post:Culm_Chasmanthium_latifolium_Leaf_Sheath_open_July_MMF