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Pygmaeocereus bylesianus1MW.jpg
Pygmaeocereus bylesianus
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Core eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Trichocereeae
Genus: Pygmaeocereus
H.Johnson & Backeb.

Pygmaeocereus bieblii
Pygmaeocereus bylesianus
Pygmaeocereus familiaris

Pygmaeocereus is a genus of diminutive cacti (family Cactaceae). These species generally do not reaching more than 4 inches high, produce a large tuberous root system and scented night flowers.