Original Description:The Cactaceae 1
p.14 - Britton & Rose (1920)
Shrub, 2 to 3 meters high, with a central erect trunk, very spiny; branches terete, green, fleshy, very easily detached from the stem; leaves stiff, fleshy, numerous, small, 2 to 4 cm long, ovate to orbicular, acute, standing at right angles to the branches; areoles large, filled with short white wool and numerous slender white spines; flowers at tops of branches, large, 7 to 8 cm broad, bright red, appearing in November; petals broad, retuse; ovary borne in uppper end of the branch, very narrow, 3 to 4 cm long, bearing the usual leaves, areoles, and spines of the branches.
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