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| Cleistocactus strausii |
Cleistocactus
Cleistocactus is a very popular South American genera, with an important
number of species. Some authors have put the sorts Akersia, Bolivicereus,
Borzicactus, Setiecereus, Seticleistocactus, Winteria, Winterocereus,
Yungasocereus within Cleistocactus. This is why the number of species
varies according to different authors.
The name comes from Greek meaning closed cactus, because the flowers
hardly open, remaining almost tubular.
Most of the species are of fast growth. Propagation is made by seeds
or cuttings.
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