Does your star cactus have a domed-like appearance of a bishop's headwear?
Does your cactus have soft gray color?
Does your star cactus have curved very long twisted spines that resemble a goat's horns?
Does your star cactus have a disc-shaped body, divided into 7 - 10 sections resembling sea urchin without spines?
Does your star cactus have narrow, cylindrical stems up to 7 inches long, with yellow flowers?
The name of your cactus is Astrophytum myriostigma, commonly called bishop's cap cactus, bishop's hat, or bishop's miter cactus. It has a star-shaped structure, that takes the domed-like appearance of a bishop's headwear. It has three to seven well-defined ribs, and more may appear as the plant ages, giving it a more cylindrical appearance. This plant can exceed 3 feet in height and 8 inches in diameter when it grows in the garden, though as a houseplant it is generally under 1 foot in height. The flowers are creamy yellow with an orange or red base.
The name of your cactus is Astrophytum coahuilense. It is a rare species not often grown in cultivation. It is very similar in appearance to A. myriostigma, with five ribs and a similar size, but its body has a softer gray color.
The name of your cactus is Astrophytum capricorne, commonly called goat's horn cactus. This cactus grows about 10 inches tall and 4 inches across. It has a gray-green color with prominent ribs, very long twisted spines, and yellow flowers with a red center in summer.
The name of your cactus is Astrophytum asterias, commonly known as sand dollar cactus, sea-urchin cactus, star cactus, or star peyote. It is a short, stubby cactus that reaches only about 2 1/2 inches high with a 6-inch diameter. This is a rare, hard-to-grow species not often seen in residential use.
The name of your cactus is Astrophytum caput-medusae. It is a rare, endangered species that does not have the same star-shaped structure as other members of the genus. Instead, it has narrow, cylindrical stems up to 7 inches long, with yellow flowers. This species is rarely grown as a residential plant.
Astrophytum ornatum, commonly called bishop's cap or monk's hood cactus is the tallest member of the genus, growing as much as 6 feet in height and 12 inches in width. It flowers with yellow blooms throughout the summer. This is the fastest-growing species in the genus.
https://www.thespruce.com/grow-astrophytum-cacti-1902957
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Sreten null
Hi! I’m Sreten Filipović. I graduated from the Faculty of Agriculture at the University of Belgrade, with a master's degree in Environmental Protection in Agricultural Systems. I’ve worked as a researcher at Finland's Natural Resources Institute (LUKE) on a project aimed at adapting south-western Finland to drought episodes. I founded a consulting agency in the field of environment and agriculture to help farmers who want to implement the principles of sustainability on their farms. I’m also a founding member of the nonprofit organization Ecogenesis from Belgrade whose main goal is non-formal education on the environment and ecology. In my spare time, I like to write blog posts about sustainability, the environment, animal farming, horticulture, and plant protection. I’ve also published several science-fiction short stories.
You can find me on LinkedIn at https://www.linkedin.com/in/sreten-filipovi%C4%87-515aa5158/