Keywords: Polemonium vanbruntiae FWS-1-4x3.jpg en Polemonium vanbruntiae Britton - Jacob's Ladder or Vanbrunt's polemonium flowering plant scanned 2006-08-11 from 1980's photograph http //digitalmedia fws gov/cdm/singleitem/collection/natdiglib/id/8177/rec/1 U S Fish and Wildlife Service National Digital Library Jacob's Ladder cropped to a 4x3 format by the uploader Dr Thomas G Barnes U S Fish and Wildlife Service Custom license marker 2013 07 28 PD-author Barnes Dr Thomas G U S Fish and Wildlife Service Uploaded with UploadWizard Polemonium vanbruntiae Photographs by Thomas G Barnes |