Roadside Pennycress Thlaspi alliaceum LinnaeusNon-nativeSynonyms: Garlic Pennycress.

Status:

This non-native mustard was introduced from Eurasia and is rapidly expanding in the eastern U.S.

Description:

Similar to Field Pennycress. Erect stem is glabrous and glaucous with some pilose hairs near base. Stem leaves are alternate, sessile, and clasping. Note strong garlic odor when crushed.

There are 157 records in the project database.

View species at Maryland Plant Atlas

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Roadside Pennycress in Kent Co., Maryland (4/27/2014). Photo by Bill Hubick. (MBP list)

Roadside Pennycress in Frederick Co., Maryland (4/20/2014). Photo by Bill Hubick. (MBP list)

Roadside Pennycress blooming in Worcester Co., Maryland (3/25/2017). Photo by Ashley Bradford. (MBP list)

A homogeneous stand of Roadside Pennycress in Kent Co., Maryland (4/27/2014). Photo by Bill Hubick. (MBP list)

Roadside Pennycress in Anne Arundel Co., Maryland (3/3/2012). Photo by Bill Harms. (MBP list)

Roadside Pennycress blooming in Howard Co., Maryland (4/7/2014). Photo by Bill Hubick. (MBP list)

Roadside Pennycress in Howard Co., Maryland (4/19/2017). Photo by Bill Harms. (MBP list)

Roadside Pennycress (stem) in Howard Co., Maryland (4/7/2014). Photo by Bill Hubick. (MBP list)

Roadside Pennycress (basal leaves) in Howard Co., Maryland (4/7/2014). Note pilose hairs at base of stem. Plant had strong garlic odor when handled. Photo by Bill Hubick. (MBP list)

Roadside Pennycress in Queen Anne's Co., Maryland (4/24/2017). Photo by Wayne Longbottom. (MBP list)

Roadside Pennycress in Queen Anne's Co., Maryland (4/24/2017). Photo by Wayne Longbottom. (MBP list)

Roadside Pennycress in Howard Co., Maryland (5/10/2017). Photo by Bill Harms. (MBP list)

Roadside Pennycress in Calvert Co., Maryland (7/20/2017). Photo by Tyler Bell. (MBP list)


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