Two of the characteristics that best define the cacti are succulent stems that hold water and nutrients as extremely arid adaptation to the environment in which they live and the presence of protective spines which deter predators herbivores in most species and other stretch like wooly hairs and form a warm, silky coat that protects them from the scorching sun during the day and freezing cold typical of deserts at night, like some cacti of Patagonia.
Neobuxbaumia polylopha beautiful flower of Mexico (I recommend expanding this and the following photos with a double click to better appreciate the details)
Neobuxbaumia polylopha more than three meters high in the magnificent Botanical Garden of Soller in Mallorca with an interesting collection of cacti and succulents overseas.
Neobuxmania polylopha solitary flower, photographed in mid-September.
Long stem apex of Neobuxbaumia polylopha with numerous buds and flowers.
This image is a flower that bloomed and dry the night before and a floral bud that will open as soon as the sun sets and then dry at midmorning the next day, which reminds us that their pollinators are nocturnal, with most likely bats or moths.
The plant zealously protects its flowers and fruits with numerous and formidable thorns.
lThe beauty of the structural design and color of the flower is unsurpassed.
Floral bud of Opuntia amyclaea a nice salmon. I recommend reading the article I wrote on this cactus: The crown of thorns of Medina Sidonia