Original Description:The Cactaceae 2
p.71 - Britton & Rose (1920)
Plant slender, 2 to 7 meters high, erect, simple or few-branched; branches 4-angled or winged; ribs thin, 3 to 4 cm high; areoles large, 1 to 2.5 cm apart, brown-felted; spines several, slender, 1 to 3 cm long, brownish; flowers yellowish green, 5 cm long; scales of the ovary and flower-tube more or less foliaceous, drying black and thin, with brown felt in the areoles; scales on the ovary linear, puberulent; fruit not known.
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