Richweed Collinsonia canadensis Linnaeus    Synonyms: Collinsonia scabriuscula, Collinsonia tuberosa, Northern Horse-balm.
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Lamiales   >   Family Lamiaceae   >   Genus Collinsonia   

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Richweed blooming in Howard Co., Maryland (8/30/2014). Photo by Bill Harms. (MBP list)

Richweed in Garrett Co., Maryland (6/20/2014). Photo by Jim Brighton. (MBP list)

Richweed blooming in Montgomery Co., Maryland (8/24/2015). Photo by Elizabeth Miller. (MBP list)

Richweed blooms in Washington Co., Maryland (8/8/2009). Photo by Jim Brighton. (MBP list)

Richweed blooming in Allegany Co., Maryland (8/29/2014). Photo by Kimberly Booth. (MBP list)

Richweed blooming in Harford Co., Maryland (8/24/2014). Photo by Joshua Jones. (MBP list)

Richweed in Howard Co., Maryland (8/20/2014). Photo by Joanne Solem. (MBP list)

Richweed blooming in Montgomery Co., Maryland (8/23/2015). Photo by Elizabeth Miller. (MBP list)

Richweed blooming in Howard Co., Maryland (8/12/2017). Photo by Bill Hubick. (MBP list)

Richweed blooming in Montgomery Co., Maryland (9/1/2017). Photo by Katherine Richards. (MBP list)

Richweed in Washington Co., Maryland (9/2/2020). (c) Bob Schwartz, some rights reserved (CC BY). Photo by Bob Schwartz via iNaturalist. (MBP list)

Richweed in Garrett Co., Maryland (7/12/2012). Photo by Jim Stasz. (MBP list)

Richweed in Allegany Co., Maryland (9/12/2016). Photo by Kimberly Booth. (MBP list)

Richweed with Horse Balm Gall Midge galls in Garrett Co., Maryland (7/26/2015). Photo by Boyer and McDowell. (MBP list)

Richweed in Garrett Co., Maryland (8/17/2019). Determined by Helen Lowe Metzman. Photo by Sue Muller. (MBP list)

Richweed in Howard Co., Maryland (3/22/2019). Collected and processed by Helen Lowe Metzman. Photo by USGS PWRC. (MBP list)

Richweed in Howard Co., Maryland (3/22/2019). Collected and processed by Helen Lowe Metzman. Photo by USGS PWRC. (MBP list)

Richweed in Howard Co., Maryland (3/22/2019). Collected and processed by Helen Lowe Metzman. Photo by USGS PWRC. (MBP list)

Richweed in Montgomery Co., Maryland (8/23/2020). (c) Emily Summerbell, some rights reserved (CC BY-NC). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Richweed in Baltimore Co., Maryland (8/26/2018). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Richweed in Howard Co., Maryland (9/2/2019). (c) Harlan Svoboda, some rights reserved (CC BY-NC). Photo by Harlan Svoboda via iNaturalist. (MBP list)

Richweed in Montgomery Co., Maryland (9/30/2020). (c) antjil, some rights reserved (CC BY-NC). Photo by antjil via iNaturalist. (MBP list)

Richweed in Caroline Co., Maryland (10/1/2018). Photo by Jim Brighton. (MBP list)


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