Summary[edit] Description: Pycnanthemum tenuifolium. Date: 20 February 2008. Source: USDA [1]. Author: Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. Permission (Reusing this file): This image is not copyrighted and may be freely used for any purpose [2].
Summary[edit] Description: Pycnanthemum tenuifolium. Frances A. Crane Wildlife Management Area, Hatchville, Massachusetts, USA. 29 September 2010. Seen during the TDWG TechnoBioblitz. Date: 29 September 2010, 00:00. Source: Slender Mountain Mint. Author: Katja Schulz from Washington, D. C., USA. Camera location41° 36′ 57.66″ N, 70° 33′ 01.27″ WView all coordinates using: OpenStreetMap 41.616017; -70.550354.