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Publication
Featured researches published by Richard Crook.
Bradleya | 1996
Richard Crook; Roy Mottram
Summary: Some notes on the validity of names published by Engelmann and Emory in 1848 are contributed by Roy Mottram. The alphabetic index of Opuntia names is continued from Bradleya 13: 88–118. 1995.
Bradleya | 2001
Richard Crook; Roy Mottram
Summary: n A note on the Saint Louis Code 2000 is contributed by Roy Mottram, and its effect on names in this index is discussed. The alphabetic index of Opuntia names is continued from Bradleya 18: 113–140. 2000. Includes eight new typifications (1 LT, 5 NT, 2 ET), and six new cultivar standards. Two paintings by Duncanson, lodged in the Kew herbarium, are reproduced here for the first time.
Bradleya | 2004
Richard Crook; Roy Mottram
Summary: n The alphabetic index of Opuntia names is continued from Bradleya 21: 63–86. 2003. There are no new names published here, but there are nine typifications (3 LT, 4 NT, 2 ET) and one new cultivar standard.
Bradleya | 2005
Richard Crook; Roy Mottram
Summary: n The alphabetic index of Opuntia names is continued from Bradleya 22: 53–76. 2004. There are no new names published here, but there are two typifications (1 NT, 1 ET), and eleven cultivar standards designated.
Bradleya | 2003
Richard Crook; Roy Mottram
Summary: n The alphabetic index of Opuntia names is continued from Bradleya 20: 51–66. 2002. There are no new names published here, but there are six typifications (5 LT, 1 NT).
Bradleya | 2002
Richard Crook; Roy Mottram
Summary: n The alphabetic index of Opuntia names is continued from Bradleya 19: 91–116. 2001. There are no new names published here, but there are three typifications (1 LT, 2 NT), and one new cultivar standard.
Bradleya | 1995
Richard Crook; Roy Mottram
Summary: An alphabetic nomenclator to epithets that have been published in the genus Opuntia at specific and infraspecific levels is presented. Special attention has been given to typification wherever possible, but taxonomic judgements have been avoided. An introduction and brief history of opuntia has been contributed by Roy Mottram.
Bradleya | 1998
Richard Crook; Roy Mottram
Bradleya | 2000
Richard Crook; Roy Mottram
Bradleya | 1999
Richard Crook; Roy Mottram