Pilosocereus densiareolatus

Pilosocereus densiareolatus is a shrubby cactus growing up to 4–5 m tall. The glaucous to brownish branches are 4–7 cm thick. Each stem has around 18 ribs that are slightly crenate. The brownish areoles are 2-3 mm diameter having white hairs. The aeroles are 2–4 min apart. Each aeroles has 10–12 marginal spines, and 5-8 central spines. A well formed white cephalium is present on mature plants. The tubular flowers are 3.5–4 cm long. The fruit are pale red with white pulp; the seeds are 2 mm long and 1.4 mm wide.

The type locality is at Montes Claros, Minas Gerais.^[2]

The specific epithet "densiareolatus" refers to the plant's dense aeroles^[3]