Trichocereus.net Cactus Seeds and Database — Trichocereus Species — Trichocereus santaensis / Echinopsis santaensis descriptions — Trichocereus santaensis Echinopsis santaensis Rio Santa Riley Flatten (2)Trichocereus santaensis Echinopsis santaensis Rio Santa Riley Flatten (2)A photo of Echinopsis santaensis Trichocereus santaensis near the Rio Santa