Trichocereus brevispinulosus is a columnar cacti that blooms white with light yellow to maroon colored back petals. Not often seen and somewhat rare. The stems of this cactus grow dark green with short spination with 14-16 ribs.
This cactus is often referred to as an Indian Cob or Indian Comb cactus
origin: South Africa
watering needs: regular water in summer/light in winter
growth habit: up to 6' tall with stems averaging in 4" diameter.
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz