december 2014 nummer 6

SUMMARY
Rob Bregman
In his editorial, Ludwig Bercht looks back at the past year. He notices that only
few manuscripts are waiting for publication, so he encourages our readers to provide
new articles.
In his ongoing series on the old ‘Verkade’ books, Theo Heijnsdijk deals with Euphorbia
clandestina, a columnar species from South Africa described in 1804. The
species may be confused with E. clava or E. cylindrica. These two species differ in
having longer peduncles.
Bertus Spee brings another part of his series entitled ‘in the spotlight’ with short
descriptions of Cephalocereus columna-trajani, Ceropegia woodii, Monanthes polyphylla
and Thelocactus bicolor.
Ludwig Bercht and Albert Hofman present their study on the genus Weingartia.
The first discovered species were W. fidaiana and W. neumanniana, both described
as Echinocactus by Backeberg in the early 1930’s. In 1933 he transferred these
plants to a new genus Spegazzinia. However, Werdermann found out that the latter
genus already existed, so he raised a new genus Weingartia in 1937. Now that the
genus Sulcorebutia is included in Weingartia, the authors conclude that the typification
of the genus Weingartia in its modern sense should be adapted, with W. fidaiana
being the type species. This article is to be continued.
Theo Heijnsdijk visited the ‘parque del draco’ in Tenerife, which is famous for
its giant dragon trees (Dracaena draco). He also pays attention to some Canarian
euphorbias.
Henk Viscaal reports about Mammillaria guelzowiana, which he found last year in
Durango, Mexico. It is the mammillaria with the largest flowers.
Henk Ruinaard visited Coby Keizer, who is responsible for our library. Too bad
very few people borrow our books and journals nowadays.
Rob Bregman puts some questionmarks by his Matucana aureiflora he bought at
Ubinks open day.
Marianne Schreurs tells about her strike cuttings of Echeveria purpusorum.
Arjen den Boer explains why he repots his cacti preferably in winter. As long as
the fresh substrate is dry, the plants have enough time to develop new roots and will
have a better chance of survival.
Wolter ten Hoeve summarizes the contents of other journals on succulent plants.
A new book on stapeliads by John Pilbeam is reviewed by Henk Viscaal.
As usual in the December issue, all author names, subjects and plant names in
the 2014 volume of Succulenta are listed.
Hector Petersenstraat 7
1112 LJ Diemen
R.Bregman@contact.uva.nl
©Succulenta jaargang 93 (6) 2014 293