Photo 9765787, (c) Damon Tighe, some rights reserved (CC BY-NC), uploaded by Damon Tighe

Attribution © Damon Tighe some rights reserved Uploaded by damontighe Source iNaturalist Associated observations Photos / Sounds 2 photos What Davis' Knotweed (Koenigia davisiae) Observer damontighe Date August 13, 2017 05:05 PM PDT Place Lassen, Lassen Volcanic National Park, Shasta, California, United States (Google, OSM) Date Added August 14, 2017 01:30 PM PDT 2 IDs Research Grade View Sizes small medium large original