OF THE CAROLINAS & GEORGIA

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Lactuca biennis   FAMILY Asteraceae_   Go to FSUS key



SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Lactuca biennis   FAMILY Asteraceae_

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)

Lactuca biennis

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-07-006:

Lactuca biennis   FAMILY Asteraceae_

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)

Mulgedium spicatum var. integrifolium

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)

Mulgedium spicatum var. spicatum

 

COMMON NAME:
Tall Blue Lettuce, Blue Wood Lettuce


         To see larger pictures, click or hover over the thumbnails.

image of Lactuca biennis, Tall Blue Lettuce, Blue Wood Lettuce

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_lasp4_001_lvd

        

image of Lactuca biennis, Tall Blue Lettuce, Blue Wood Lettuce

Bruce A. Sorrie    bas_lactuca_biennis1

August    Moore County    NC

Flowers typically blue, but yellow in one form. Panicle branches short, per Wildflowers of the Southern Mountains (Smith, 1998).

image of Lactuca biennis, Tall Blue Lettuce, Blue Wood Lettuce

Penny Longhurst    pen_20220819_113952

August        NC

Mountains to Sea Trail

Leaves on winged petioles, 4-12" long, with several wide, coarsely toothed, pointy-tipped lobes, per Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019).

image of Lactuca biennis, Tall Blue Lettuce, Blue Wood Lettuce

Penny Longhurst    pen_20220819_114612

August        NC

Mountains to Sea Trail

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Lactuca biennis   FAMILY Asteraceae_

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Lactuca biennis   FAMILY Asteraceae_

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21
Lactuca biennis

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-07-006:
Lactuca biennis   FAMILY Asteraceae_

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)
Mulgedium spicatum var. integrifolium

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)
Mulgedium spicatum var. spicatum

 

Find by SCIENTIFIC NAME:

1892

Forb
Biennial

Habitat: Pastures, roadsides, forest edges, thickets, per Weakley's Flora

Native to the Carolinas & Georgia

Common in NC (rare elsewhere in GA & SC)

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)

DOES THE PLANT HAVE "MILKY SAP"?
Has milky sap (latex)

LEAVES:
Simple
Alternate

FLOWER:
Summer/Fall
Rays: Blue or yellow
Disc: Absent
Inferior ovary
Ray flowers bisexual

FRUIT:
Summer/Fall
Brown
Achene

 

TO LEARN MORE about this plant, look it up in a good book!



 


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