Roadside Pennycress in Kent Co., Maryland (4/27/2014).

View Record Details Photo by Bill Hubick MBP List

Roadside Pennycress in Frederick Co., Maryland (4/20/2014).

View Record Details Photo by Bill Hubick MBP List

Roadside Pennycress blooming in Worcester Co., Maryland (3/25/2017).

View Record Details Photo by Ashley Bradford MBP List

A homogeneous stand of Roadside Pennycress in Kent Co., Maryland (4/27/2014).

View Record Details Photo by Bill Hubick MBP List

Roadside Pennycress blooming in Howard Co., Maryland (4/7/2014).

View Record Details Photo by Bill Hubick MBP List

Roadside Pennycress in Howard Co., Maryland (4/19/2017).

View Record Details Photo by Bill Harms MBP List

Roadside Pennycress (stem) in Howard Co., Maryland (4/7/2014).

View Record Details 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.

View Record Details Photo by Bill Hubick MBP List

Roadside Pennycress in Howard Co., Maryland (5/17/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC).

View Record Details Photo by Wayne Longbottom MBP List

Roadside Pennycress in Queen Anne's Co., Maryland (4/24/2017).

View Record Details Photo by Wayne Longbottom MBP List

Roadside Pennycress in Queen Anne's Co., Maryland (4/24/2017).

View Record Details Photo by Wayne Longbottom MBP List

Roadside Pennycress in Howard Co., Maryland (5/10/2017).

View Record Details Photo by Bill Harms MBP List

Roadside Pennycress in Harford Co., Maryland (4/24/2018).

View Record Details Photo by Kirsten Johnson MBP List

Roadside Pennycress in Baltimore Co., Maryland (4/29/2018). (c) Charlie Davis, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 261497 - Psn: 200)

Roadside Pennycress in Baltimore Co., Maryland (4/29/2018). (c) Charlie Davis, some rights reserved (CC BY-NC).

View Record Details Photo by Charlie Davis MBP List

Roadside Pennycress in Harford Co., Maryland (4/29/2019). (c) susanrich01, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 261503 - Psn: 200)

Roadside Pennycress in Harford Co., Maryland (4/29/2019). (c) susanrich01, some rights reserved (CC BY-NC).

View Record Details Photo by susanrich01 via iNaturalist MBP List

Roadside Pennycress in Garrett Co., Maryland (4/21/2026). (c) Kyle Klotz, all rights reserved (Photo ID: 1495287 - Psn: 200)

View Record Details Photo by Kyle Klotz MBP List

Roadside Pennycress in Garrett Co., Maryland (4/21/2026). (c) Kyle Klotz, all rights reserved (Photo ID: 1495288 - Psn: 200)

View Record Details Photo by Kyle Klotz MBP List

Roadside Pennycress in Frederick Co., Maryland (4/25/2026). (c) dansmall, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>) (Photo ID: 1495373 - Psn: 200)

Roadside Pennycress in Frederick Co., Maryland (4/25/2026). (c) dansmall, some rights reserved (CC BY-NC)

View Record Details Photo by Dan Small MBP List

Map Snapshot

416 Records

GA AL WA FR CL MO HO BA BC HA CE PG AA CV CH SM KE QA CN TA DO WI SO WO

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.

Seasonality Summary

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Resources

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Citations

No citations linked for this taxon yet.

Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

Roadside Pennycress in Kent Co., Maryland (4/27/2014). View Record Details Media by Bill Hubick.

Roadside Pennycress in Frederick Co., Maryland (4/20/2014). View Record Details Media by Bill Hubick.

Roadside Pennycress blooming in Worcester Co., Maryland (3/25/2017). View Record Details Media by Ashley Bradford.

A homogeneous stand of Roadside Pennycress in Kent Co., Maryland (4/27/2014). View Record Details Media by Bill Hubick.

Roadside Pennycress blooming in Howard Co., Maryland (4/7/2014). View Record Details Media by Bill Hubick.

Roadside Pennycress in Howard Co., Maryland (4/19/2017). View Record Details Media by Bill Harms.

Roadside Pennycress (stem) in Howard Co., Maryland (4/7/2014). View Record Details Media by Bill Hubick.

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. View Record Details Media by Bill Hubick.

Roadside Pennycress in Howard Co., Maryland (5/17/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). View Record Details Media by Wayne Longbottom.

Roadside Pennycress in Queen Anne's Co., Maryland (4/24/2017). View Record Details Media by Wayne Longbottom.

Roadside Pennycress in Howard Co., Maryland (5/10/2017). View Record Details Media by Bill Harms.

Roadside Pennycress in Harford Co., Maryland (4/24/2018). View Record Details Media by Kirsten Johnson.

Roadside Pennycress in Baltimore Co., Maryland (4/29/2018). (c) Charlie Davis, some rights reserved (CC BY-NC). View Record Details Media by Charlie Davis.

Roadside Pennycress in Harford Co., Maryland (4/29/2019). (c) susanrich01, some rights reserved (CC BY-NC). View Record Details Media by susanrich01 via iNaturalist.

Roadside Pennycress in Frederick Co., Maryland (4/25/2026). (c) dansmall, some rights reserved (CC BY-NC) View Record Details Media by Dan Small.

Source: Wikipedia

Mummenhoffia alliacea

Raceme

Botanical illustration
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Brassicales
Family:	Brassicaceae
Genus:	Mummenhoffia
Species:	M. alliacea
Binomial name
*Mummenhoffia alliacea* (L.) Esmailbegi & Al-Shehbaz
Synonyms^[1]
Crucifera thlaspoides E.H.L.Krause Myagrum sativum Aubry ex DC. Thlaspi alliaceum L.

Mummenhoffia alliacea (syn. Thlaspi alliaceum), the garlic pennycress or roadside pennycress, is a species of flowering plant in the family Brassicaceae.^[2] It is native to central and southern Europe, and Anatolia, and has been introduced to the United Kingdom and the eastern United States.^[1] An erect plant usually 25 to 65 cm (10 to 26 in) tall, it is typically found on roadsides, fields, and other disturbed situations.^[2]