Echinopsis terscheckii


Echinopsis terscheckii, commonly known as the cardon grande cactus or Argentine saguaro, is a large cactus native to South America and popular in cultivation.

Description

It is a columnar, branching cactus that can grow over tall.Its branches are about in diameter with 8 to 14 ribs. Branches are cylindrical, fleshy, light green. The branches are 10-20 cm in diameter, with 8-14 blunt ribs. It has large brownish areoles about apart with 8 to 15 yellowish spines, long, a central one, sometimes absent, and 8-15 radial. The nocturnal funnel-shaped white flowers can grow up to long and wide. Pericarp and flower tube with dense white or brown axillary hairs. The round or oblong blue fruits are about in diameter and contain black to brown, oval seeds approximately long.

Native distribution

It is native to several provinces including Jujuy, Tucumán, La Rioja, San Juan, Catamarca and Salta provinces in northwestern Argentina, and is the eponymous cactus of Los Cardones National Park in Salta Province. Range continues to the western slopes of the Andes in Peru, Bolivia department of Tarija, and Ecuador. It is found growing on dry slopes of the Andean foothills at altitudes of 500 to 1500 meters.

Taxonomy

This species was first description as Cereus terscheckii by Ludwig Georg Karl Pfeiffer was published in 1837. Heimo Friedrich and Gordon Douglas Rowley placed the species in the genus Echinopsis in 1974.

Alkaloids

Echinopsis terscheckii contains > 0.005-0.025% mescaline in fresh cactus and 0.01%-2.375% mescaline in dry weight.