Pachypodium bispinosum

P. bispinosum is a succulent shrublet with a partially subterranean, tuberous stem up to 0.6 m tall, the branches armed with paired straight spines 10-20 mm long. The narrow leaves are scattered or in tufts on the stems. The broad, bell-shaped flowers are few and in clusters at the tips of the branches, 15-20 mm in diameter. Flowers appear with the leaves from August to December in shades of purple to pink. It is the most floriferous of all species in cultivation.