Dig deeper at SERNEC, a consortium of southeastern herbaria.

Read more about Tall Blue Lettuce at Vascular Plants of North Carolina.

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.

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

        

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).

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).

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