Melocactus is a genus of especially aesthetically interesting cacti, distinguishable by their odd cephalium that protrudes from the top. The cephalium, which is a bristly collection of aureoles, is designed to produce flowers and fruit and can grow up to 3 feet tall in some cases. Cephaliums are red or white and form small pink…

This handsome cactus has tall, columnar trunks and reaches heights of twenty feet, or more. It produces clusters of stout, cylindrical stems that resemble a pipe organ. The plant develops many arms during its lifetime and grows quicker with supplemental irrigation. It is deep green with ribs that have minor spines. Its central spine is…

Astrophytum capricorne, the goat’s horn cactus, is a species of flowering plant in the cactus family Cactaceae, that is native to the Coahuila regions of Northern Mexico.[2] Growing to 25 centimetres (9.8 in) tall by 10 centimetres (3.9 in) wide in a ball or oval shape, it is grey-green in colour with 7 to 9 prominent ribs, very long twisted spines and yellow flowers with a…

https://www.gardenia.net/plant/echinopsis-chamaecereus