Wildflowers of the United States

Long-styled Gladecress, Nashville Mustard, Cedar Gladecress - Leavenworthia stylosa

Genus Common Name: Gladecress

Native Status: Native

Dicot Annual Herb

Leavenworthia stylosa - Long-styled Gladecress, Nashville Mustard, Cedar Gladecress. All 8 species in the Leavenworthia (Gladecress) genus are endemic to eastern North America, from as far north as southern Indiana and Ohio south to Georgia and west to eastern Texas. They are winter annuals - the seeds germinate in the fall, and spend the winter as a rosette of leaves, starting to bloom in late winter or early spring.

Leavenworthia stylosa is found only in limestone glades and nearby sites of 5 Tennessee counties - Bedford, Davidson, Rutherford, Smith, and Wilson.

Found in:
TN

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Distribution of Leavenworthia stylosa in the United States and Canada:

Map courtesy of The Biota of North America Program.
Map color key
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Site: Couchville Cedar Glade, Davidson County, TN Date: 2016-March-30	Photographer: Gerald C. Williamson Nikon D7000 Tamron SP 90MM f/2.8 AF Macro
The fragrant flowers of Long-styled Gladecress are showy, with white, yellow, or lavender petals. The claws of the four petals are yellow to orange. The petals are notched at their apex. While the style of this species are longer than others in the genus, it is not necessarily longer than the stamens.

Site: Couchville Cedar Glade, Davidson County, TN Date: 2016-March-30	Photographer: Gerald C Williamson
Long-styled Gladecress can be quite showy, especially when several flowers (here in their white form) are open at the same time.
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Site: Couchville Cedar Glade, Davidson County, TN Date: 2016-March-30	Photographer: Gerald C Williamson Nikon D7000
One to several naked scapes with a solitary flowers arise from a basal rosette of leaves. The petals may be white, lavender, or yellow. The flowering scapes can be around 4 inches tall.
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Site: Couchville Cedar Glade, Davidson County, TN Date: 2016-March-30	Photographer: Gerald C Williamson Nikon D7000
The leaves are basal, and lobed with up to 5 lobes on each side of the leaf, with a much larger terminal lobe. The leaf can be up to about 4 inches long.
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Site: Couchville Cedar Glade, Davidson County, TN Date: 2016-March-30	Photographer: Gerald C Williamson Nikon D7000
The blossom of Long-styled Gladecress is the largest of those in the Leavenworthia genus, up to about an inch across. Here L. stylosa (top) compared with the flower of L. exigua (bottom.)
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References used for identification and information:

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Leavenworthia stylosa initially published on USWildflowers.com 2017-02-10; Updated 2017-02-10

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2024
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Code Update 20230302