Trichocereus cephalomacrostibas

• Body: Grayish green, in dense groups to 6.5' (2m.) high, stems to 4” (10cm.) diameter.
• Ribs: 8, broad, thickened around the areoles and divided by transverse furrows.
• Areoles/Spines: Areoles .6” (1.5cm.) large, thickly brown felted; prominent, very crowded at the apex. Around 20 radial spines, very short, tapering to a point; 1-4 center spines to 4.75” (12cm.); dark brown at first, later faded gray, sometimes angular and channeled, rather curving and variously projecting, interlacing in part.
• Flowers/Fruit: Flowers white, to 4.75” (12cm.), ~4” (10cm.) diameter. Fruit reddish or yellowish-orange, oblong/spherical.
• Distribution: Above Mollendo, Southern Peru.

Trichocereus chalaensis

• Body: Erect branches to 13' (4m.) high, branches swelling during the foggy season to 6” (15cm.).
• Ribs: 8, with a transverse furrow above the areole and a plane surface above and below.
• Areoles/Spines: 6 to 10 radial spines to .4” (1cm.), 2-3 center spines to 2” (5cm.) long; dark brown at first or blackish above.
• Flowers/Fruit: Flowers white, to 6.75” (17cm.) long.
• Distribution: South of Chala, Southern Peru.

Trichocereus chilensis (aka Trichocereus chiloensis)

• Body: Columnar , usually with several stout branches arising from near the base, from 10' (3m.) to 26' (8m.) high. Occasionally confused with T. litoralis.
• Ribs: 16-17, low and broad, separated by narrow intervals, divided into large tubercules when fully mature.
• Areoles/Spines: 8 to 12 radial spines up to 1.5” (4cm.), a single center spine from 1.5” to 2.75” (4-7cm.) although up to 4.75” (12cm.) long.
• Flowers/Fruit: Flowers white, tinged with red or brown, to 5.5” (14cm.). Fruit is spherical.
• Distribution: Central Valley of Chile, from Curico to Puenta Colorado.
• Subspecies: v. eburneus: Body is stouter, spines brownish at first, soon becoming ivory-white, flowers pink or suffused pink.

Trichocereus chuquisancanus

• Body: No description.
• Ribs:
• Areoles/Spines:
• Flowers/Fruit:
• Distribution: