Astrophytum is a genus of six species of cacti. These species are sometimes referred to as living rocks, though the term is also used for other genera, particularly Lithops (Aizoaceae). The generic name is derived from the Greek words άστρον (astron), meaning "star," and φυτόν (phyton), meaning "plant."
Species
- Astrophytum asterias (Zucc.) Lem. – Sand Dollar Cactus, Sea Urchin Cactus, Star Peyote
- Astrophytum capricorne (A.Dietr.) Britton & Rose – Goat's Horn Cactus
- Astrophytum caput-medusae D.R.Hunt
- Astrophytum coahuilense (Møller) K.Kayser
- Astrophytum myriostigma Lem. – Bishop's Cap Cactus, Bishop's Hat, Bishop's Mitre Cactus Astrophytum ornatum (DC.) Britton & Rose – Monk's Hood
Synonymy
The genus has several synonyms:- Astrophyton Lawr., orth. var.
- Digitostigma Velazco & Nevárez
- Maierocactus E.C.Rost
