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Open Research Online The Open University’s repository of research publications and other research outputs Taxonomy and phytogeography of the Cactaceae of eastern Brazil Thesis How to cite: Taylor, Nigel Paul (2000). Taxonomy and phytogeography of the Cactaceae of eastern Brazil. PhD thesis The Open University. For guidance on citations see FAQs. c 2000 The Author https://creativecommons.org/licenses/by-nc-nd/4.0/ Version: Version of Record Link(s) to article on publisher’s website: http://dx.doi.org/doi:10.21954/ou.ro.0000d49b Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online’s data policy on reuse of materials please consult the policies page. oro.open.ac.uk Nigel Paul Taylor, BSe (Hons), Botany TAXONOMY AND PHYTOGEOGRAPHY 2 OF THE CACTACEAE OF 3 6 6 EASTERN BRAZIL .... 15 .... 15 .... 17 .... 26 ... 29 .... 30 ... 34 ... 34 ... 38 Thesis for the award of 'Doctor of Philosophy' ... 39 ... 41 .. 43 Life Sciences ... 47 .. 69 .. 72 The Open University ... 75 .... 78 October 2000 ... 90 ... 96 .. 99 . 108 .148 . 157 . 166 189 . 192 194 198 200 205 215 Royal Botanic Gardens, Kew (Sponsoring Establishment) f>I u-n-t o~ N 6 . 1 Supplement 1* FORMAL TAXONOMIC TREATMENT OF TIlE CACTACEAE OF EASTERN BRAZIL CONTENTS Introductory notes ...... ........................ .... ... .... ............ .... ....... ... .... ....... ............ ............................ .......... ................... .... 2 Artificial Key to Genera ............. ................................................................................................................................. 3 Pereskioideae .............................. ........................................................ ......................................................................... 6 Pereskia .:...................................................................................................................................................... 6 Opuntioideae ............................................................................................................... ................................................ 15 Quiabentia .................................................................................................................................................... 15 Tacinga ......................................................................................................................................................... 17 Brasiliopuntia ............................................................................................................................................... 26 Nopalea ........................................................................................................................................................ 29 Opuntia ......................................................................................................................................................... 30 Cactoideae ................................................................................................................................................................... 34 Hylocereus ............................................................................................ ........................................................ 34 Selenicereus .... : ............................................................................................................................................. 38 Epiphyllum ................................................................................................................................................... 39 Pseudoacanthocereus ......................................................................................... ........................ .................. 41 Lepismium .................................................................................................................................................... 43 Rhipsalis ....................................................................................................................................................... 47 Hatiora ......................................................................................................................................................... 69 Schlumbergera ............................................................................................................ ............................ ..... 72 Brasilicereus ................................................................................................................................................. 75 Cereus ............................................................................................................................................................ 78 Cipocereus ................. ...................................... ....... ................................................... ................. .................. 90 Stephanocereus ................................................................................................................................ ............. 96 Arrojadoa ..................................................................................................................................................... 99 Pilosocereus ................................................................................................................................................ 108 Micranthocereus .......................................................................................................................................... 148 Coleocephalocereus .................................................................................................................................... 157 Melocactus ................................................................................................................................................... 166 Harrisia ....................................................................................................................................................... 189 Leocereus ..................................................................................................................................................... 192 Facheiroa .................................................................................................................................................... 194 Espostoopsis ................................................................................................................................................ 198 Arthrocereus ................................................................................................................................................ 200 Discocactus ................................................................................................................................................. 205 Uebelmannia ............................................................................................................................................... 215 * This appendix is a work to which the thesis makes frequent reference. It is not part of the thesis itself and hence has not been presented in double-spaced format. Some of the data it contains have been compiled with the assistance of Dr Daniela C. Zappi. NPT. 1 2 FORMAL TAXONOMIC TREATMENT OF THE CACTACEAE OF EASTERN BRAZIL Introductory notes As its scope this account attempts to include all taxa of Cactaceae that are native, naturalized or commonly cultivated outdoors in North-eastern Brazil, and in South-eastern Brazil north of 22°S and east of 46°W (entries for non-native taxa are indicated by an asterisk [*] below). However, the focus from the start has been on the terrestrial, rather than epiphytic taxa, the former having a centre of high endemism in the dry environments comprising south-eastern Piaui, southernmost Ceara, the southern half of Paraiba, mainland Pernambuco, Bahia, Alagoas, Sergipe, Espirito Santo, most of Minas Gerais and the northern half of Rio de Janeiro (Map 1, Chapter 4). While epiphytic taxa native within this area are fully treated below, their main centre of diversity in SE Brazil, around 22-26°S, has been intentionally excluded, since a preliminary account of the all­ important tribe Rhipsalideae was published quite recently (Barthlott & Taylor 1995). Except where expressly limited, synonymy aims to be comprehensive for names based on Brazilian types (Southern Brazil excepted), but all relevant botanical nomenclature is included in the Index to names and epithets (page 208). Vernacular names are also included from various sources, ego Menezes (1949). The morphological descriptions do not aim in principle to account for all aspects of the plant, but are meant to be primarily diagnostic, supplementing details in the dichotomous keys to facilitate identification. In some cases they are comprehensive where the data have been available or when the differences between taxa are particularly subtle. Details mentioned in descriptions of genera, subgenera or other infrageneric categories, which apply to all subordinate taxa, are not always repeated in those of the included species etc. Unqualified measurements refer to length (or height in the case of erect plants); those connected by a multiplication sign ( x ) refer to length followed by width/diameter and, occasionally, also thickness, in the case of laterally compressed structures. Dimensions of the whole plant or its stem are always given exclusive of the
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