{"id":{"repo_id":"cape-town","oai_identifier":"oai:open.uct.ac.za:11427/25917"},"canonical_url":"https://search.dev.ndltd.org/etd/cape-town/oai:open.uct.ac.za:11427/25917","repository":{"repo_id":"cape-town","name":"University of Cape Town","base_url":"https://open.uct.ac.za/oai/request"},"display":{"title":"A comparative study of Grewia bicolor Juss. and Grewia flava DC","abstract":"Grewia bicolor and Gewia flava have been recognized by earlier authors as separate species on the basis of the shape of the leaf base, the number of flower stalks on the peduncle and reticulate venation of the tertiary veins. These two \"species\" are extremely variable, and often characters from G. bicolor and G. flava are exhibited on the same specimen. This study aims at evaluating the distinction between the two \"species\", thereby testing whether they should be recognized as separate taxa, and if so, which characters can be used to delimit G. bicolor and G. flava. Numerical phenetic analyses of 11 characters investigated from 211 herbarium specimens revealed that the two \"species\" cannot be differentiated by the traditional characters. Univariate analysis showed that the diagnostic characters that have been used to date show continuous variation. Thus G. bicolor and G. flava cannot be recognized as separate species.","abstract_html":"Grewia bicolor and Gewia flava have been recognized by earlier authors as separate species on the basis of the shape of the leaf base, the number of flower stalks on the peduncle and reticulate venation of the tertiary veins. These two "species" are extremely variable, and often characters from G. bicolor and G. flava are exhibited on the same specimen. This study aims at evaluating the distinction between the two "species", thereby testing whether they should be recognized as separate taxa, and if so, which characters can be used to delimit G. bicolor and G. flava. Numerical phenetic analyses of 11 characters investigated from 211 herbarium specimens revealed that the two "species" cannot be differentiated by the traditional characters. Univariate analysis showed that the diagnostic characters that have been used to date show continuous variation. Thus G. bicolor and G. flava cannot be recognized as separate species.","abstract_has_math":false,"creators":["Bartsch, Silke"],"institution":"Department of Biological Sciences","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Linder, H Peter"],"committee_chairs":[],"committee_members":[],"year":2000,"date_issued":"2000","date_published":"2000","updated_at":"2026-07-22T22:22:54Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11427/25917","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Linder, H Peter"]},{"key":"dc:creator","label":"Author","values":["Bartsch, Silke"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2017-10-30T13:45:43Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2017-10-30T13:45:43Z"]},{"key":"dc:date.issued","label":"Date","values":["2000"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Biological Sciences"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Cape Town"]},{"key":"dc:type","label":"Dc Type","values":["Bachelor Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Honours"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["BSc (Hons)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11427/25917"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Grewia bicolor and Gewia flava have been recognized by earlier authors as separate species on the basis of the shape of the leaf base, the number of flower stalks on the peduncle and reticulate venation of the tertiary veins. These two \"species\" are extremely variable, and often characters from G. bicolor and G. flava are exhibited on the same specimen. This study aims at evaluating the distinction between the two \"species\", thereby testing whether they should be recognized as separate taxa, and if so, which characters can be used to delimit G. bicolor and G. flava. Numerical phenetic analyses of 11 characters investigated from 211 herbarium specimens revealed that the two \"species\" cannot be differentiated by the traditional characters. Univariate analysis showed that the diagnostic characters that have been used to date show continuous variation. Thus G. bicolor and G. flava cannot be recognized as separate species."]},{"key":"dc:title","label":"Title","values":["A comparative study of Grewia bicolor Juss. and Grewia flava DC"]}]}],"canonical_facts":{"dc:contributor.advisor":["Linder, H Peter"],"dc:creator":["Bartsch, Silke"],"dc:date.accessioned":["2017-10-30T13:45:43Z"],"dc:date.available":["2017-10-30T13:45:43Z"],"dc:date.issued":["2000"],"dc:description.abstract":["Grewia bicolor and Gewia flava have been recognized by earlier authors as separate species on the basis of the shape of the leaf base, the number of flower stalks on the peduncle and reticulate venation of the tertiary veins. These two \"species\" are extremely variable, and often characters from G. bicolor and G. flava are exhibited on the same specimen. This study aims at evaluating the distinction between the two \"species\", thereby testing whether they should be recognized as separate taxa, and if so, which characters can be used to delimit G. bicolor and G. flava. Numerical phenetic analyses of 11 characters investigated from 211 herbarium specimens revealed that the two \"species\" cannot be differentiated by the traditional characters. Univariate analysis showed that the diagnostic characters that have been used to date show continuous variation. Thus G. bicolor and G. flava cannot be recognized as separate species."],"dc:identifier.uri":["http://hdl.handle.net/11427/25917"],"dc:language.iso":["eng"],"dc:publisher.department":["Department of Biological Sciences"],"dc:publisher.institution":["University of Cape Town"],"dc:title":["A comparative study of Grewia bicolor Juss. and Grewia flava DC"],"dc:type":["Bachelor Thesis"],"dc:type.qualificationlevel":["Honours"],"dc:type.qualificationname":["BSc (Hons)"]},"updated_at":"2026-07-22T22:22:54Z"}