oktober 2009 nummer 5

Summary
Rob Bregman
This Succulenta issue is opened by Ben Zonneveld’s editorial. He explains how to
collect seeds of Echeveria and Sempervivum.
The usual column for our youngsters by Johanna Smit-Reesink deals with
Borzicactus samaipatanus var. multiflorus.
Bertus “cactussen” Spee presents pictures and short descriptions of Mammillaria
bocasana “Fred”, Pachypodium brevicaule, Trichodiadema densum and Thelocactus
leucacanthus.
Jan Jaap de Morree went looking for aeoniums on the Canary Island La Palma.
12 Species occur there, 5 of them are endemic.
Evert Smienk reports a strange phenomenon with his grafted Uebelmannia gummifera.
The Echinopsis stem bursted open but it is still unclear whether this is a
young Echinopsis or Uebelmannia sprout.
Ton Pullen and Ludwig Bercht review the contents of other journals on succulent
plants.
Ludwig Bercht continues his series on the genus Gymnocalycium. In part 4 the
Pirisemineum seed group is the subject. The vision of the author is that this seed
group comprises of only two species, G. pflanzii and G. zegarrae (with subspecies
and varieties). The more or less similar G. saglionis belongs to another seed group.
Henk Viscaal discusses a new CD on the succulents of the Little Karoo, South
Africa, compiled by Frans Noltee. The text is English.
Jan Mijnders built a rock garden next to a wall of his house. Last summer he
planted 138 succulent plants, predominantly cacti. After the winter with only protection
from rain, 104 plants survived.
Henk Viscaal and some of his friends visited the habitat of Geohintonia mexicana
and Aztekium hintonii in Mexico. They include a table listing the differences of both
plants.
A new book on the genus Gymnocalycium by Graham Charles is reviewed by
Henk Viscaal.
The final article in this issue of Succulenta is by Louis van de Meutter. He presents
Stapelia clavicorona, a stem succulent from South Africa which is difficult to cultivate
and thus rare in collections.
Hector Petersenstraat 7
1112 LJ Diemen
©Succulenta jaargang 88 (5) 2009 243