Arrojadoa rhodantha v. occibahiensis. 

Arthrocereus rondonianus (Synonym: Trichocereus rondonianus)

Astrophytum asterias. Sea urchin cactus. USDA 9-11. Hardy to 20° F . Full sun to part shade. Solitary globular cactus, up to 6" in diameter. Little water summer, no water in winter. Flowers are yellow with a red center. (CITI protected. Cannot ship out of USA).

Astrophytum asterias Gonzales. (Can't export this variety).

Astrophytum asterias v. nudum. (Can't export this variety).

Astrophytum capricorne. 

Astrophytum capricorne 'Stachellos' 

Astrophytum capricorne v. major.

Astrophytum capricorne v minor. USDA 9-10. Hardy to 20° F. Full sun to part shade. Solitary columnar or globose cactus, up to 4' tall, 4" in diameter. Moderate water in summer, little to no water in winter.  3" flowers are yellow with a red center. Origin: Northern Mexico.

Astrophytum capricorne var. crassispinum. Coahuila: 41 km W Cuatro Cienegas. Stem dark green to blue-green with or without scattered white flecks and with stout black spines.

Astrophytum crassispinoides. 

Astrophytum crassispinum. 

Astrophytum hybrids. Capricorne / myriostigma / ornatum / senile. All hybrid mix. 

Astrophytum myriostigma.  

 Astrophytum myriostigma 'Tricostatum Hybrids'

Astrophytum myriostigma Columnar

Astrophytum myriostigma CV Kikko (Japan, Onzuka)           

Astrophytum myriostigma CV Kikko & Fukeryo (Yoroi). Cultivars mixed.

Astrophytum myriostigma CV Kikko 'Colored'

Astrophytum myriostigma cv Onzuka (Japan, Onzuka)

Astrophytum myriostigma Frosted 

 Astrophytum myriostigma V baldunum CV Kikko & Fukeryo  (Mixed cultivars)

Astrophytum myriostigma v. columnare (Syn: Astrophytum
 columnaris, Astrophytum columnare)

Astrophytum myriostigma v. nudum

Astrophytum myriostigma v. ornatum

Astrophytum myriostigma v. quadricostatum. 

Astrophytum myriostigma v. tulense. Tamaulipas: near Tula. Tall, columnar stem with dense white flecks and small yellow flowers. 

Astrophytum niveum.

Astrophytum ornatum (Bishops cap). Sunset: 11-13,18-21; USDA: 9b-10. Light shade. Heat tolerant. Little water. Hardy to 20°F. Solitary barrel grows to 4' tall; 10" in diameter. Origin: Vista Hermosa/Queretaro/Mexico. 

Astrophytum ornatum v. glabrescens