Original Description:The Cactaceae 1
p.188 - Britton & Rose (1920)
Plant up to 5 meters high, with a rather definite cylindric spiny trunk; joints large, 25 to 50 cm long, 2 to 4 times as long as wide, narrowly oblong, green; leaves subulate, with purple tips; wool in young areoles dark brown to purple; areoles elevated, rather large, 2 to 3 cm apart; spines 3 to 6, slightly spreading, acicular, white, the longest 2 to 2.5cm long; glochids tardily developing, few, often wanting; flowers deep orange, turning to scarlet; ovary nearly globular, more or less spiny, nearly truncate at apex.
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