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Weed Identification

palmleaf morningglory

Family

Convolvulaceae

Scientific Name

Ipomoea wrightii
Primary photograph of weed

Synonyms (former Scientific Names):

Wright's morning-glory

Leaves

First true leaf and all subsequent leaves are distinctly lobed into 3 to 7 segments, giving the overall appearance of fingers on a hand. Individual segments range from 3/4 to 2 1/2 inches long. All lobes also arise from the same point (palmately divided leaves).

Identifying Characteristics

The leaves that are divided into 3 to 7 segments that arise from the same point (palmately divided), the pink to light purple flowers, and the seed capsule with a spiraled stalk are all key characteristic that help in the identification of palmleaf morningglory. However, the cotyledons of palmleaf morningglory and Pitted Morningglory (Ipomoea lacunosa) are nearly identical, and distinguishing between these two species usually requires waiting for the first true leaf to form.

Flower Seed Head

Typical, morningglory-like flowers occur that are pink to light purple in color with a darker center. Flowers range from 3/4 to 1 inch in length.

Seed Fruit

Cotyledons are deeply indented, have pointed ends, and are without hairs. The cotyledons of palmleaf morningglory are very similar to those of pitted morningglory.Fruit: A brown capsule that is without hairs (glabrous) and has a distinctively coiled or spiraled stalk. The capsules contain several dark brown seed that usually have long white hairs attached to them.

Where Found

Palmleaf morningglory is primarily a weed of agronomic crops found in the lower southeastern states only.

Growth Habit

vine

Thorns or Spines

not present

Approximate Flower Diameter

Varies: 
pencil
dime
nickle

Dominant Flower Color

Varies: 
purple
pink

Flower Symmetry

radial symmetery

Leaf Hairs

no hairs

Leaf Shape

lance

Leaf Arrangement

alternate

Leaf Margin

entire

Leaf Structure

palmate

Leaf Stalk

longer than leaf

Stem Hairs

no hairs

Stem Cross Section

round or oval

Milky Sap

not present

Root Structure

taproot

Life Cycle

perennial

Ochrea

not present

Plant Type

Vine