Texas Wildbuds
Funastrum clausum
(White Twinevine)
Funastrum clausum, Estero Llano Grande State Park, Weslaco, Hidalgo Co. 3134
Funastrum clausum, Estero Llano Grande State Park, Weslaco, Hidalgo Co. 3124
Funastrum clausum, Estero Llano Grande State Park, Weslaco, Hidalgo Co. 3142
Funastrum clausum, Estero Llano Grande State Park, Weslaco, Hidalgo Co. 3151
Funastrum clausum, Estero Llano Grande State Park, Weslaco, Hidalgo Co. 3145
Funastrum clausum, Estero Llano Grande State Park, Weslaco, Hidalgo Co. 3140
Funastrum clausum, Estero Llano Grande State Park, Weslaco, Hidalgo Co. 3156
| Scientific Name | Funastrum clausum (Sarcostemma clausum) |
USDA PLANTS Symbol | FUCL |
| Common Name | White Twinevine | ITIS Taxonomic Serial No. | 513716 |
| Family | Apocynaceae (Dogbane) | SEINet Reference |
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| Description | Habitat: Various soil types in salt marshes, estuaries, lakeshores, streamsides and disturbed sites; in Texas, only in the Rio Grande delta. Plant: Twining, climbing perennial vine growing over the tops of adjacent bushes; sparsely covered with soft, fine hairs (pilose) to smooth, branching stems 10 to 30+ feet long; milky, sticky sap. Leaves: Opposite, elliptic to oval with obtuse to shallowly cordate base, 3/4 to 2 inches long and 0.2 to 1 inch wide; tips acuminate to mucronate; surfaces are pilose or smooth; petioles up to 1/4-inch long. Inflorescence: Seven to 15 flowers in umbels on peduncles 3/8 to 4-3/4 inches long; spreading corolla lobes are ovate, about 1/4-inch long and are cream to greenish cream; corona is encircled by maroon to reddish ring; calyx lobes are lanceolate to ovate and about 1/8-inch long; pedicels are 5/8 to 1-inch long. Bloom Period: Year-round. Fruit: Usually solitary, pilose-hairy, lance-shaped capsules, ~2 inches long and 3/8 to 5/8-inch wide with an attenuate tip. References: Flora of North America and Florida Wildflower Foundation. |
BONAP Distribution Map Map Color Key |
Texas Status: Native |
Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County
© Tom Lebsack 2025
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