|
Aloe |
|
|
|
|
by Weisser P J, Weisser J N & L Robes |
13
(4): 117-118, 1975 |
|
|
by Lembcke H, Weisser P J, |
17
(1): 9-26, 1979 |
|
|
by Weisser P J & Laubscher N F |
30(3/4): 80-82, 1993 |
|
British Cactus
& Succulent Journal |
|
|
|
Die Cactaceae |
by Backeberg, C. |
3
(1995-2023), 1959 |
|
Cactaceae Systematics
Initiatives
|
|
|
|
Cactus and
Succulent Journal (USA)
|
|
|
|
|
by
P.C. Hutchison |
25(2): 34-37, 1953 |
|
Cactus and
Succulent Journal of Great Britain
|
|
|
|
|
by
Taylor, N P |
43(2/3): 49-60, 1981 |
|
Calandrinia II
|
|
|
|
|
by
Derek Butcher |
1982 |
|
The Chileans |
|
|
|
Echinocactus macracanthus |
by Salm-Dyck |
(Cact.
Hort. Dyck. 1849:143 1850) |
|
Echinocactus fiedlerianus |
by Karl Schumann |
:121-122 |
|
Haseltonia |
|
|
|
|
by
Robert Kraus |
13:110,
1995 |
|
Kakteen in Südamerika
|
by Friedrich Ritter |
(3):1044-1107, 1980 |
|
Kakteen und andere
Sukkulenten |
|
|
|
|
by L. Diers |
:363 -
365 |
|
|
by M. Voldan |
:27(8): 185-186 (1976) |
|
Piante
Grasse |
|
Fascicolo
4-Ottobre-Dicembre 1991 - Anno XI - Volume 11 |
|
|
by Massimo Meregalli |
|
|
by Carlo Doni |
|
PK Notes &
Observations |
by Paul Klaassen |
|
|
Succulenta |
|
|
|
Misc.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
by Ricardo Keim |
2000 |
|
|
by Rudolf Schulz & Attila Kapitany
by Paul Klaassen |
1996
2002 |
|
|
Berkeley University |
|