Arrojadoa penicillata, in Britton and Rose's The Cactaceae
Origin: Brazil (Bahia)
Growth Habits: Shrubby cactus, branching basally, up to 6.5 feet tall (2 m); stems up to 12 inches long (30 cm), 0.6 inches in diameter (1.5 cm); 10 to 12 ribs; 1 to 3 central spines; 8 to 12 radials. In the wild this species uses the support of bushes and other small trees to stay erect.
much enlarged cephalic stem tip
(photo James Pickering)
typical flower cluster.
(photo James Pickering)
Blooming Habits:
The purplish flowers come in clusters, from a woolly white cephalia with brownish bristles. They are solid pink, up to 0.8 inches in diameter (2 cm).
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