Pilosocereus brasiliensis

Somewhat branching at base, 1 to 3 meters high, producing long, slender, weak branches, these at first erect, but soon spreading or reclining, bright green when old, but when young somewhat glaucous; branches at base nearly square in section, but toward the tip with 4, sometimes 5, prominent obtuse ribs; areoles very close together, with long white hairs longer than the spines; radial spines several, very short, brown, spreading, acicular; central spines generally solitary, porrect, 1 to 2 cm long; flowers 5 cm long; fruit globular.