Angiosperms (Flowering Plants) • Earth.com

Cleistocactus samaipatanus

(Cleistocactus samaipatanus)

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Description

Cleistocactus samaipatanus is a species of flowering plant in the family Cactaceae, native to Bolivia. Growing to 1.5 m (4.9 ft) tall, it has multiple long, narrow columnar green stems with pale gold spines. It grows vigorously with large, pinky-red flowers in summer. In cultivation in the UK, this plant has gained the Royal Horticultural Society’s Award of Garden Merit (confirmed 2017).However, as it does not tolerate temperatures below 0 °C (32 °F), it must be grown under glass, though it may be placed outside during the warm summer months. Cleistocactus is a genus of flowering plants in the cactus family Cactaceae, native to mountainous areas - to 3,000 m (9,843 ft) - of South America (Peru, Uruguay, Bolivia and Argentina). The name comes from the Greek kleistos meaning closed because the flowers hardly open. The stems of these cacti are tall, mostly slender and often many-branched with numerous ribs with closely set areoles and spines. The flowers are tubular and the tips hardly open with only the style and stamens usually protruding.

Taxonomic tree:

Domain:
Kingdom: Plantae
Phylum:
Class: Magnoliopsida
Order:Caryophyllales
Family:Cactaceae
Genus:Cleistocactus
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