Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Malvids: Brassicales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Thlaspi arvense
FAMILY
Brassicaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Read more about Field Pennycress at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Thlaspi arvense
FAMILY
Brassicaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Thlaspi arvense
SYNONYMOUS WITH Flora of North America
Thlaspi arvense
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 088-02-002:
Thlaspi arvense FAMILY Brassicaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Thlaspi arvense
COMMON NAME:
Field Pennycress, Frenchweed
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_thar5_001_lvd
)
USDA / Selected Weeds of the US. 1970 swus_page_215
)
JK Marlow jkm140521_108
May Greenville County SC
Swamp Rabbit Trail
Fruits obovate or suborbicular, pedicels straight or slightly upcurved, per Flora of North America.
)
JK Marlow jkm140521_108b
May Greenville County SC
Swamp Rabbit Trail
Fruit base obtuse or rounded, apex deeply emarginate, per Flora of North America.
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Thlaspi arvense
FAMILY
Brassicaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Thlaspi arvense
FAMILY
Brassicaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Thlaspi arvense
SYNONYMOUS WITH
Flora of North America
Thlaspi arvense
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 088-02-002:
Thlaspi arvense
FAMILY
Brassicaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Thlaspi arvense
3233
Forb
Winter annual
Habitat: Fields, disturbed areas, per Weakley's Flora
Non-native: Europe
Uncommon in NC (rare in GA & SC)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Alternate (basal leaves usually absent or withered toward the end of flowering)
FLOWER:
Spring/Summer/Fall
White
4 sepals
4 petals
6 stamens slightly tetradynamous (2 short, 4 long)
Bisexual
FRUIT:
Spring/Summer/Fall
Silicle
TO LEARN MORE about this plant, look it up in a good book!
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p102
- Wildflowers of the Southern Mountains (Smith, 1998) p058
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".