Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
A comparative study of Grewia bicolor Juss. and Grewia flava DC
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. b...
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Biological Sciences
2017
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867611294019878912 |
|---|---|
| access_status_str | Open Access |
| author | Bartsch, Silke |
| author2 | Linder, H Peter |
| author_browse | Bartsch, Silke Linder, H Peter |
| author_facet | Linder, H Peter Bartsch, Silke |
| author_sort | Bartsch, Silke |
| collection | Thesis |
| description | 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. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/25917 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Department of Biological Sciences |
| publisherStr | Department of Biological Sciences |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/25917 A comparative study of Grewia bicolor Juss. and Grewia flava DC Bartsch, Silke Linder, H Peter Botany 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. 2017-10-30T13:45:43Z 2017-10-30T13:45:43Z 2000 2017-03-09T14:26:10Z Bachelor Thesis Honours BSc (Hons) http://hdl.handle.net/11427/25917 eng application/pdf Department of Biological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Botany Bartsch, Silke A comparative study of Grewia bicolor Juss. and Grewia flava DC |
| thesis_degree_str | Bachelor's / Honours |
| title | A comparative study of Grewia bicolor Juss. and Grewia flava DC |
| title_full | A comparative study of Grewia bicolor Juss. and Grewia flava DC |
| title_fullStr | A comparative study of Grewia bicolor Juss. and Grewia flava DC |
| title_full_unstemmed | A comparative study of Grewia bicolor Juss. and Grewia flava DC |
| title_short | A comparative study of Grewia bicolor Juss. and Grewia flava DC |
| title_sort | comparative study of grewia bicolor juss and grewia flava dc |
| topic | Botany |
| url | http://hdl.handle.net/11427/25917 |
| work_keys_str_mv | AT bartschsilke acomparativestudyofgrewiabicolorjussandgrewiaflavadc AT bartschsilke comparativestudyofgrewiabicolorjussandgrewiaflavadc |