Keywords: RN Ulmus parvifolia bark.JPG Ulmus parvifolia bark; Photo by R Nijboer Nijboer collection 2007 Ronnie Nijboer PermissionOTRS 2011072510013852 Cc-zero Original upload log en wikipedia RN+Ulmus+parvifolia+bark JPG 2008-08-06 10 16 Ptelea 1600×1200× 791829 bytes <nowiki> Photo by R Nijboer Nijboer collection 2007 Nijboer Yes None </nowiki> Ulmus parvifolia |