sensitive plant field guide Dimling, Jennifer. creator United States Forest Service. Pacific Northwest Region. text oru Portland, Or Forest Service 1991 monographic eng [64] p. col. ill., 1 map 23 cm. general by Jennifer Dimling. Endangered species Oregon Willamette National Forest Rare plants Oregon Willamette National Forest Willamette National Forest (Or.) doc92000505 920220 20160527183745.0 46950