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Ullrich, B. (1990g) Ein neuer Standort fUr Agave
dasylirioides Jacobi & Bouche in Oaxaca. Kakt.
and. Sukk. 41(8): 164-166, ills., map.
Ullrich, B. (1990h) Agave attenuata Salm-Dyck
op haar natuurlijke groeiplaatsen. Succulenta
69(6): 121-127, ills., map.
Ullrich, B. (1990i) Agave macroculmis Todaro en
Agave gentryi Ullrich spec. nov. Succulenta
69(9): 190-193, (10): 210-214, ills.
Ullrich, B. (1990j) Agave obscura Schiede y Agave
horrida Lemaire ex Jacobi ssp. perotensis
Ullrich ssp. nov. Cact. Suc. Mex. 35(4): 75-82,
ills.
Ullrich, B. (1991a) Agave colimana Gentry oder
Agave ortgiesiana Roezl? Kakt. and. Sukk.
42(1): 24-28, ills., map.
Ullrich, B. (1991b) Agave gypsophila. Kakt. and.
Sukk. 42(3): centre page pullout 199118, ills.
Ullrich, B. (1991c) Notiz zu Agave breviscapa
Berger ex Roster und Agave vernae Berger.
Kakt. and. Sukk. 42(10): 242-243, ill.
Ullrich, B. (1991d) Zum Verbreitungsgebiet von
Agave victoriae-reginae T. Moore. Kakt. and.
Sukk. 42(11): 262-263, ill., map.
Ullrich, B. (199Ie) Beschorneria yuccoides W. J.
Hooker. Kakt. and. Sukk. 42(12): centre page
pullout 1991/36, ills.
Ullrich, B. (19910 De systematische positie van
Agave felgeri Gentry. Succulenta 70(7/8): 147-
150, ills., map.
Ullrich, B. (1991g) Aantekeningen bij Agave guiengola
Gentry. Succulenta 70(12): 257-260,
ills.
Ullrich, B. (1991h) Notas sobre la publicacion del
genero Furcraea Ventenat (Agavaceae). Cact.
Suc. Mex. 36(1): 8-9.
Ullrich, B. (199li) EI complejo Furcraea longaeva
Karwinski et Zuccarini. Cact. Suc. Mex.
36(2): 30-36, (3): 56-61, (4): 79-83, ills., map.
Ullrich, B. (1991j) De taxonomische rangschikking
van Agave nizandensis Cutak. Succulenta
70(4): 89-92, ills.
Ullrich, B. (1992a) Anmerkungen zu drei Taxa
der Gattung Agave aus EI Salvador. Kakt. and.
Sukk. 43(3): 50-53, ills.
Ullrich, B. (1992b) Wer ist der Autor von Agave
wercklei? Kakt. and. Sukk. 43(8): 181-183,
(9): 212-216, ills.
Ullrich, B. (1992c) The discovery of Agave seemanniana
Jacobi. Brit. Cact. Succ. J. 10(1):
24-28, ills., map.
Ullrich, B. (1992d) On the discovery of Agave
schidigera Lemaire and status of certain taxa of
section Xysmagave Berger. Brit. Cact. Succ. 1.
10(3): 61-70, ills., map.
Ullrich, B. (1992e) Zum Status von Agave chrysantha
Peebles. And. Sukk. No. 18: 3-5, map.
Ullrich, B. (19920 On the history of Agave asperrima
and A. scabra (Agavaceae) as well as some
taxa of the Parryanae. Sida 15(2): 241-261, ills.
References
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Ullrich, B. (1992h) Furcraea (Agavaceae) en
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Ullrich, B. (1993a) Observations sur Agave mitis
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Ullrich, B. (1993b) Early illustrations of Polianthes
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Ullrich, B. (1995) La questione della priorita di
Agave spicata Cavanilles su Agave yuccaefolia
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Agave spicata Cavanilles su Agave yuccaefolia
F. Delaroche in Redoute (Parte II). Zur Prioritlit
von Agave spicata Cavanilles tiber Agave
yuccaefolia F. Delaroche in Redoute. Pi ante
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