HOOCK, H. 1993 . Kakt. and. Sukk. Band: 44 Heft (2) Seite (Umschlagblatt) Zum Titelbild: Astrophytum coahuilense (MOELLER) KAYSER
To the cover picture: Astrophytum coahuilense (MOELLER) KAYSER
photo Josef Busek, text Heinz Hoock
Astrophytum coahuilense (Moeller) Kayser is part of the most interesting plants within the morphologically so variable genus Astrophytum. It is exactly like Astrophytum myriostigma Lemaire on the one hand in the outer growth form: how this it has usually five ribs and is covered dense with white wool flakes. As soon as the splendid, large flowers appear, however, on the other hand gets clear that a narrow relationship must exist with Astrophytum capricorne (Dietrich) Britt. et Rose. They are coloured orangely to deep red in the throat and at fertilization a seed-rich fruit which is coloured purply develops. The surprising mixture of the vegetative and generative characteristics at Astrophytum coahuilense from the Astrophytum lines of the southern and northern Mexican highland is the reason for a still today continuing opinion difference, how to classify these beautiful plants in taxonomy or in her evolutiv development. You find a proposal for solution in a contribution on page...
You should nurse Astrophytum coahuilense in your collection at a sunny place and water it moderately from April till October. A purely mineral substratum such as brick stone chippings with sand mixed, offers after a dry winter period at 15-20 degrees centigrade the optimal condition for regular flowers during the summery growth time.
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