Rose Cactus
It is thought that cactii evolved from the Pereskia family, to the Opuntia family, and then the Cereus family in order to prevent transpiration of water.  First, the leaf, which transpired more water, became a spine, and it became a succulent to be able to reserve more water.  And in drier areas, it changed its shape into a sphere which offers the smallest surface area.
Rose Cactus, which is a wild cactus, belongs to the genus PereskiaPereskia is the most primitive among these genera.  Rose Cactus takes the form of a shrub or a low tree despite being a cactus.  It can grow to 2 to 5 m in height, and the greyish-brown trunk can grow 25 cm in diameter.  The epithet, grandifolia meaning large leaf, refers to the many leaves which are more than 20 cm in length.  The leaves are edible and in the endemic region, they cook it with minced meat.  It has spines on the trunk, the branches and at the axil, and has areoles which characterise cacti.  The number of spines at each areole gradually increase with age.  The areoles on the young small branches often have no spines but the ones on the trunk can have spines of more than 90, which are 2 to 6.5 cm in length.
The inflorescence is formed at the tip of the branch where 10 to 15 flowers bloom and sometimes more than 30.  The flower is 3 to5 cm in diameter and has green bracts.  P. grandifolia var. violacea has purplish-pink or purple flowers and bracts.
Classification: Cactaceae Pereskia
Scientific name: Pereskia grandifolia
Japanese name: Sakura-kirin
English Name: Rose Cactus
Native locality: Brazil
Ecological description: Shrub / small tree
RDB : ---
Planting place: Plant of South and Central America Greenhouse
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