Trichocereus Macrogonus

Body: Stout (although it may be slender in cultivation) bluish green,
particularly on young growth, to over 6.5' (2m.) high. Branches 2.75"
(7cm.) diameter, more or less frosted at first.

Ribs: Usually 7, rounded, .6" (1.5cm.) high, separated by depressions over the
areoles.

Areoles/Spines: Gray areoles, .6" (1.5cm.) to .75" (2cm.) apart. Horn colored
to brown spines, later blackish or dark gray or grayish-brown.
Six to 9 radial spines, tapering to a fine point, from .2"
(.5cm) to .75" (2cm.) long. Central spines stouter, to about
.75" (2cm.) long.

Flowers/Fruit: White flowers, to 7" (18cm.) long, broadly spherical.

Distribution: South America (not reported in the wild).

Huge, columnar.
Contains: mescaline, tyramine, 3-methoxytyramine, 3,4-dimethoxyphenethylamine.