Myrtillocactus geometrizans f. cristata
Myrtillocactus geometrizans have got names: "Blue Candle", "Whortleberry Cactus". Origin: Northern central Mexico down to Oaxaca. There are forests of this cactus in some areas of the Chihuahuan desert. Growth Habits: candelabra like tree to fifteen feet tall (4.5 m), stems 3 to 4 inches thick (7-10 cm). Blooming Habits: starts blooming when it is 2 feet tall (60 cm). It has one inch in diameter whitish flowers in March, that turn in very sweet, edible, dark red, 1/3 inch in diameter (8 mm) fruits.
Crested form of this is very interesting and have very intensive growth. Plants on photos on right up corner from Nikita Botanical Garden (Yalta, Ukraine), all other plants by Mundani Botanical Garden. Below two words about this Garden.
Mundani Botanical Garden. The Garden is located in the skirt of a mountain of the Majorca Island to 5 km of the sea and occupies an extension of 6,874 m2. It is formed by two different parts: to the left an orchard of orange trees with 4,823 m2, distributed in eight terraces, that have been transformed into a garden of acclimatization of trees, shrubs and lianas from worldwide and to the right other portion of 2,051 m2 of almost virgin mountain with the typical vegetation of the Tramuntana mountain range, including some endemic plants. The orchard counts with a system of irrigation by dripping and enjoys a microclimate something warmer than the rest of the Island, which allows to cultivate tropical and subtropical plants.
Link to source of photos: here. Contact with autor.