Cevallia sinuata Lag.

Loasaceae

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Cevallia sinuata is an unusual species, the only one in its genus, characterized by thick, prickly, glandular leaves, and terminal clusters of yellow flowers subtended by linear, red-orange bracts. The hairs covering the leaves and stems are variable in length and thickness, and may be hooked, branched or stinging. Leaves are thick, lobed along the margins, and dotted with yellowish glands. Relatively long bristles line the edges, while the surfaces are covered with shorter hairs. Upper stem leaves are smaller, more lanceolate in shape, and stemless.

The inflorescence is a compact cluster on top of a thick, bristly, leafless stalk, up to 4 inches tall. Flowers have five linear, yellow sepals and five similar-looking petals; all are hairy, especially along the edges and undersurfaces. At the center are five stamens, with yellow filaments and white anthers, and a short style topped by a conical stigma. Flowers mostly bloom at night.

Western USA wildflowers: Stinging Serpent, Cevallia Sinuata (americansouthwest.net)

North America's stinging serpent (Cevallia sinuata) is primarily a Chihuahuan Desert species, but its range extends into dry regions of Arizona, New Mexico, and Texas. Its flower petals are hairy and most other parts of the plant sprout bristles that produce a stinging sensation if touched. The flowers generally bloom at night.

Stinging serpent (Cevallia sinuata) Flower, Leaf, Care, Uses - PictureThis (picturethisai.com)

https://youtu.be/FZ1IyhzliOA

 

https://youtu.be/7Amq-2Kt_nY

https://youtu.be/ZUxRepxw9xE

 

 

https://youtu.be/W4pzUvYVXdg?t=200

https://youtu.be/WpBJDxEFydE?t=339