Chorizanthe polygonoides Knotweed Spineflower ID: 0000 0000 0705 0716 [detail] © 2005 Doreen L. Smith	Chorizanthe polygonoides Knotweed Spineflower ID: 0000 0000 0705 1019 [detail] © 2005 George W. Hartwell	Chorizanthe polygonoides var. polygonoides Knotweed Spineflower ID: 8251 3201 1721 0086 [detail] © 1999 John Game	Chorizanthe polygonoides var. polygonoides Knotweed Spineflower ID: 8251 3201 1721 0088 [detail] © 1999 John Game
Chorizanthe polygonoides var. polygonoides Knotweed Spineflower ID: 8251 3201 1721 0087 [detail] © 1999 John Game	Chorizanthe polygonoides var. polygonoides Knotweed Spineflower ID: 0000 0000 1009 0608 [detail] © 2009 Neal Kramer	Chorizanthe polygonoides var. polygonoides Knotweed Spineflower ID: 0000 0000 1009 0609 [detail] © 2009 Neal Kramer	Chorizanthe polygonoides var. polygonoides Knotweed Spineflower ID: 0000 0000 1009 0610 [detail] © 2009 Neal Kramer
Chorizanthe polygonoides var. polygonoides Knotweed Spineflower ID: 0000 0000 1009 0611 [detail] © 2009 Neal Kramer	Chorizanthe polygonoides var. polygonoides Knotweed Spineflower ID: 0000 0000 1009 0612 [detail] © 2009 Neal Kramer	Fallopia japonica Japanese Knotweed ID: 0000 0000 0306 0139 [detail] © 2006 Dr. Amadej Trnkoczy	Fallopia japonica Japanese Knotweed ID: 0000 0000 0306 0140 [detail] © 2006 Dr. Amadej Trnkoczy
Fallopia japonica Japanese Knotweed ID: 0000 0000 0306 0142 [detail] © 2006 Dr. Amadej Trnkoczy	Fallopia japonica Japanese Knotweed ID: 0000 0000 0306 0143 [detail] © 2006 Dr. Amadej Trnkoczy	Fallopia japonica Japanese Knotweed ID: 0000 0000 0306 0144 [detail] © 2006 Dr. Amadej Trnkoczy	Fallopia japonica Japanese Knotweed ID: 0000 0000 0306 0145 [detail] © 2006 Dr. Amadej Trnkoczy
Fallopia japonica Japanese Knotweed ID: 0000 0000 0306 0146 [detail] © 2006 Dr. Amadej Trnkoczy	Polygonum amphibium Water Knotweed ID: 8076 3101 3973 0079 [detail] Charles Webber © 1998 California Academy of Sciences	Polygonum amphibium Water Knotweed ID: 8076 3101 3973 0080 [detail] Charles Webber © 1998 California Academy of Sciences	Polygonum amphibium Water Knotweed ID: 1351 3151 4005 0027 [detail] J. E.(Jed) and Bonnie McClellan © 2005 California Academy of Sciences
Polygonum amphibium ssp. emersum Smartweed, Swamp Knotweed ID: 0000 0000 0903 0183 [detail] © 2003 Tom Annese	Polygonum amphibium ssp. emersum Smartweed, Swamp Knotweed ID: 0000 0000 0903 0182 [detail] © 2003 Tom Annese	Polygonum amphibium var. emersum Swamp Knotweed ID: 0000 0000 1208 1814 [detail] © 2008 Neal Kramer	Polygonum amphibium var. emersum Swamp Knotweed ID: 0000 0000 1208 1817 [detail] © 2008 Neal Kramer

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos.