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Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Manihot walkerae (Walker's manioc)
Cliffe, Harry

Manihot walkerae

Manihot walkerae Croizat

Walker's Manioc, Walker's Manihot, Texas Tapioca

Euphorbiaceae (Spurge Family)



USDA Native Status: L48 (N)


From the Image Gallery

1 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Root Type: Tuberous
Leaf Arrangement: Alternate
Leaf Margin: Cleft , Lobed
Breeding System: Flowers Unisexual , Monoecious
Fruit Type: Capsule
Size Notes: Up to about 5 feet tall.

Bloom Information

Bloom Color: White
Bloom Time: Apr , May , Jun , Jul , Aug , Sep
Bloom Notes: Blooms follow rains. Petals have light purple lines.


Native Distribution: Historically, Walker's manioc is known only from the lower Rio Grande valley of Texas (Hidalgo and Starr counties) and northern Tamaulipas, Mexico. In 1995, Walker's manioc was located in three different areas on the Lower Rio Grande National Wildlife Refuge in Starr and Hidalgo Counties; endangered.
Native Habitat: In dense stands of native brush or in small openings in areas that are somewhat shaded and relatively moist.

U.S. Fish & Wildlife Service Threatened & Endangered Status

USFWS Species Profile: Q1YS
Status: Endangered
Historic Range: U.S.A. (TX), Mexico
Critical Habitat: N/A
Special Rules: N/A
This information is derived from the U.S. Fish & Wildlife Serrvice Environmental Conservation Online System.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

National Butterfly Center - Mission, TX

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Manihot walkerae in USDA Plants
FNA: Find Manihot walkerae in the Flora of North America (if available)
Google: Search Google for Manihot walkerae


Record Modified: 2023-02-17
Research By: DEW

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