Astrophytum myriostigma var. columnare (Schum.) Tsuda

국표에 없다.

Origin and Habitat: Mexico. Villar, Cerritos and far north in the area of Tula and Miquihuana in the State of Tamaulipas, Dr. Arroyo in the State of Nuevo Leon.
Habitat: Prefers stony conditions in humus enriched soil, at approximately 1600 m of height of over the sea. I grows often under trees or protected by Hechtia clumps.

Synonyms:

• Astrophytum myriostigma var. columnare Frič

Common Names include:
ENGLISH: Bishop's Cap, Bishop's Miter, Bishop's hat, Miter Cactus, Monk's Hood
CHINESE (中文): 鸾凤玉(四棱), 鸾凤玉(龙凤), 碧琉璃（红叶）, 优选碧方玉, 白云恩塚鸾凤玉, 鸾凤玉（变锦）, 红叶锦（黄）, 红叶锦}{碧琉璃鸾凤玉（多头）, 恩塚丸棱四角鸾凤玉}{鸾凤玉（多头）, 恩塚丸棱鸾凤玉, 恩塚}{恩塚（杂交变种）, 龟甲鸾凤玉（稍红}, 三角鸾凤玉
ITALIAN (Italiano): Cappello del Prete, Cappello del Vecovo, Berretta da Prete
SPANISH (Español): Bonete de Obispo, Mitra

Description: This questionable variety is very similar to the other myriostigmas, it only deviate from the well-known typical form for its more columnar growth and smaller flowers size.
Stem: Slender and more thin, already in the youth phase. Dimension 25-50(-100) cm tall, only 5-8 cm in diameter shaped like a bishop's headpiece or a star.
Ribs: Few (usually 5).
Flowers: Absolutely smaller than those of A. myriostigma, hardly 2,5 cm in length, pale-yellow, silk-shining, occasionally with an orange gloom.

Astrophytum myriostigma var. columnare (llifle.com)

https://youtu.be/gP_uVpx_5AE?t=528