Opuntia rufida

Opuntia rufida is a species of prickly pear cactus native to southwestern Texas and northern Mexico, where it grows on rocky slopes. The species makes up for its total lack of spines with a profusion of red-brown glochids. The common name blind prickly pear or cow blinder comes from the fact that the glochids may be carried away by the wind and blind animals. [1][2]

Blind prickly pear
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Genus: Opuntia
Species:
O. rufida
Binomial name
Opuntia rufida

The plant is closely related to Opuntia microdasys, and is sometimes taken as its subspecies, O. m. subsp. rufida.[3]

Description

Opuntia rufida is a multi-branched cactus that may reach 3 to 5 feet tall and a bit wider. The plant generally has a short trunk, and the thickish tomentose pads are subcircular, obovate, or elliptical. Areoles are spineless but have showy red-brown glochids. In mid-spring the plant produces a profusion of brilliant yellow flowers changing to orange and red, 3 to 4 inches across. In summer, the oblong fruit is bright red to purple, 2 to 3 inches long.

The plant can be a spectacular addition to the desert garden. It requires full sun and is highly tolerant of desert heat. However, the glochids tend to dislodge easily when the plant is bumped or shaken and they can be dangerous to humans and animals if carried by the wind. In fact, the common name blind prickly pear or cow blinder refers to the blinding of animals by the airborne glochids. The species rufida refers to the ruddy, reddish-brown glochids.[3][2]

Range

Opuntia rufida is native to the Big Bend area of southwestern Texas and the Chihuahuan Desert of northern Mexico.[3]

Introduced range

Opuntia rufida has been planted as an ornamental in Queensland, Australia but has since been recognized as Prohibited invasive plant under the Biosecurity Act 2015. As a result it may not be sold or moved and must be reported to Biosecurity Queensland.[4]

  • At Coahuila, Mexico
  • Cladode with glochids
  • Flowers
  • Opuntia in the El Boticario de Almería park, Spain.

References
  1. Engelmann, George (1856). "Opuntia rufida". Proceedings of the American Adademy of Arts and Science. 3: 298.
  2. Martin, Chris A. "Virtual Library of Phoenix Landscape Plants". Arizona State University. Retrieved 22 December 2020.
  3. Shaw, Joe J. (31 January 2012). "Opuntia rufida, Texas prickly pear cactus, red glochids". Opuntia Web. Retrieved 21 December 2020.
  4. "Blind cactus - Opuntia rufida" (PDF). Biosecurity Queensland.


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