Original Description:The Cactaceae 2
p.136 - Britton & Rose (1920)
Plants tall, 5 to 6 meters high, much branched, the branches somewhat spreading, light green when young; ribs 7 or 8, low and rounded; areoles rather close together, 1 to 1.5 cm apart; spines numerous, often 12, very stout, rigid, sometimes 7 cm long, swollen at base; flowers 12 to 14 cm long, doubtless nocturnal but, sometimes at least, remaining open during the morning, fragrant; flower-tube green, 5 to 6 cm long; inner perianth-segments oblong, white, 4 to 5 cm long; filaments weak, declining on the lower side of the throat; scales on the ovary and flower-tube small, bearing a few long hairs in their axils; fruit not known.
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