Brasilicereus phaeacanthus is a species of Brasilicereus found in Brazil.[1]
Brasilicereus phaeacanthus typically grows with shoots that branch from the base, standing upright but sometimes leaning or climbing. The shoots are 4 to 9 centimeters in diameter and can reach up to 4 meters in height. The plant has 8 to 13 low, narrow ribs covered with whitish wool in the areoles. It features 1 to 3 yellowish-brown central spines up to 3 centimeters long and 10 to 12 yellowish marginal spines between 10 and 15 millimeters long. The flowers are whitish green to greenish, up to 6.5 centimeters long, and 6 centimeters in diameter, with a slightly curved flower tube. The slightly bumpy fruits can reach a diameter of up to 1.5 centimeters.[2]
Brasilicereus phaeacanthus is native to the Brazilian state of Bahia.[3]
It was first described as Cereus phaeacanthus by Max Gürke in 1908.[4] The specific epithet phaeacanthus derives from the Greek words phaios (gray) and akanthos (thorn), referring to the plant's thorniness. Curt Backeberg reclassified it into the genus Brasilicereus in 1942.[4]