Echinopsis cajasensis is a species of the genus Echinopsis in the cactus family(Cactaceae). The specific epithet cajasensis refers to the occurrence of the species in Cajas in the Bolivian province of Eustaquio Méndez .
Echinopsis cajasensis usually grows individually. The flattened, spherical, green shoots reach a diameter of up to 15 centimeters. There are 13 to 25 narrow and sharp ribs , which are more or less humped between the areoles. The oval areoles on it are whitish. The one or two protruding, brownish yellow central spines are darkly pointed. The eight to twelve radial spines are brownish yellow to almost white and have a length of 0.7 to 1.2 centimeters.
The white flowers appear on the side of the shoots and open at night. They become up to six inches long. The egg-shaped, green fruits are up to 3 centimeters long and have a diameter of 2 centimeters.
Distribution and systematics
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 221 .
- Friedrich Ritter: Cacti in South America. Results of my 20 years of field research . Volume 2: Argentina / Bolivia. Friedrich Ritter Selbstverlag, Spangenberg 1980, p. 630, Figure 598.
- Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 37.
- Friedrich Ritter: Cacti in South America. Results of my 20 years of field research . Volume 2: Argentina / Bolivia. Friedrich Ritter Selbstverlag, Spangenberg 1980, p. 630.