Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

Home to the plants of the Sonoran, Chihuahuan and Mojave Deserts

Cirsium ochrocentrum, Yellowspine Thistle

Apodanthera undulata, Melon Loco

Apodanthera undulata, Melon Loco, Southwest Desert Flora Apodanthera undulata, Melon Loco, Southwest Desert Flora Apodanthera undulata, Melon Loco, Southwest Desert Flora Apodanthera undulata, Melon Loco, Southwest Desert Flora

Scientific Name: Apodanthera undulata
Common Name: Melon Loco
Also Called: Melon-loco; (Spanish: Melón Loco)
Family: Cucurbitaceae, Cucumber or Gourd Family
Synonyms: ()
Status: Native.
Duration: Perennial
Size: Up to 8 feet or more, spreading vine.
Growth Form: Forb/herb; pubescent vine; stems with tendrils growing along ground (prostrate), large root; herbage pubescence.
Leaves: Green; gray-green; pubescent, alternate, large showy leaves, kidney or reniform shaped leaves, margins undulate or wavy.
Flower Color: Yellow; showy and large; funnelform or tube shaped, monecious with male and female flowers on same plants, fruit is a gourd, mostly oval with raised parallel longitudinal ridges along the hard outer shell.
Flowering Season: June to September, earlier in Texas where they bloom from May through September.
Elevation: 1,500 to 5,500 feet.

Habitat Preferences: Dry washes and rivers, plains and mesas.

Recorded Range: Apodanthera undulata is rare in North America where it occurs in Arizona, New Mexico and Texas. It is also found in northern and central Mexico.

North America & US County Distribution Map for Apodanthera undulata.

U.S. Weed Information: No information available.
Invasive/Noxious Weed Information: No information available.
Wetland Indicator: No information available.
Threatened/Endangered Information: No information available.

Genus Information: The genus Apodanthera is rare in North America where only 1 species is native. In Arizona it is found in the central and southern portions of the state.

Comments: Melon Loco has a showy yellow flower and a foul or otherwise disagreeable odor.

Date Profile Completed: 4/11/2015, rev. 07/22/2015, updated format 10/12/2017
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database – ITIS search
Arizona Flora, Kearney, Thomas H., Peebles, Robert H., 1960, University of California Press, Berkley and Los Angeles, California.
Native Plant Information Network, NPIN (2013). Published on the Internet [accessed:4/11/2015]. Lady Bird Johnson Wildflower Center at The University of Texas, Austin, TX.
SEINet for synonyms, scientific names and recorded geographic locations,