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Pygmaeocereus densiaculeatus Backeb.
Descr. Cact. Nov. ed. 3, 12. 1963

= Haageocereus lanugispinus F.Ritter
Kakteen Südamerika 4: 1395 (1981)

Accepted Scientific Name: Haageocereus tenuis F.Ritter
Kakteen Südamerika 4: 1421 (fig.). 1981

Pygmaeocereus densiaculeatus (Haageocereus lanugispinus) Photo by: Valentino Vallicelli
FR583 North of Pativilca, Dept. Lima and Ancash, Peru. It is a beautiful but extremely rare plant, sometime found in collection with its older name Pygmaeocereus densiaculeatus.


See all synonyms of Haageocereus tenuis
Accepted name in llifle Database:
Haageocereus tenuis F.Ritter
Kakteen Südamerika 4: 1421 (fig.). 1981
Synonymy: 8

Subspecies, varieties, forms and cultivars of plants belonging to the Haageocereus tenuis group

  • Haageocereus lanugispinus F.Ritter: has cylindrical stems 10-20 cm long, 1.2 2 cm in diameter. Spines 30-40 dense, 3-5 mm long, unequal, needle-like, glassy white. Distribution: North of Pativilca, Peru.
  • Haageocereus lanugispinus f. cristatus hort.: Crested form. It has its unique dense cover of glassy white spines.
  • Haageocereus tenuis F.Ritter: has rooting slender, prostrate stems 1.5-3 cm in diameter. Central spines 7-10 to 20 mm long. Radial spines 30, 2-3 mm long. Distribution: Between Chancay and Huacho, north of Lima, Peru.

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