Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Ursinia"'
Autor:
J. Molero Briones
Publikováno v:
Collectanea Botanica, Vol 28, Pp 81–94-81–94 (2009)
[es] Se indica por primera vez para el continente europeo la presencia de Ursinia nana, una Anthemideae de origen sudafricano introducida en el NE de la Península Ibérica. Además de su localización precisa, morfología, número cromosómico, ecol
Externí odkaz:
https://doaj.org/article/093d64787a7847acb7733debf034f9fa
Autor:
Robert J. McKenzie, Chiara Nepi
The names Arctotis staticifolia Poir. and Arctotis tenuifolia Poir. were validly published by Jean Louis Marie Poiret based on material collected from “Cap de Bonne-Esperance” and stated to be lodged in the Herbier Desfontaines. No original mater
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b35a98de7aa9ded666c72e78c0d7d889
https://zenodo.org/record/4602142
https://zenodo.org/record/4602142
Autor:
Marinus L. de Jager, Allan G. Ellis
Publikováno v:
Annals of Botany. 113:213-222
BACKGROUND AND AIMS Floral polymorphism is frequently attributed to pollinator-mediated selection. Multiple studies, however, have revealed the importance of non-pollinating visitors in floral evolution. Using the polymorphic annual daisy Ursinia cal
Publikováno v:
African Entomology. 16:23-32
Compositocoris senecionus, new genus and species, is described from the Namaqualand region of South Africa and assigned to the Halticini. Morphological documentation is provided in the form of colour habitus images, scanning electron micrographs for
Publikováno v:
South African Journal of Botany. 62:231-235
By using attributes of neighbours, such as number, size and distance, investigators have developed neighbourhood competition models that are able to predict plant performance of an individual in a plant population. A non-linear neighbourhood model pr
Publikováno v:
South African Journal of Botany. 63:210-215
Competitive effect and response hierarchies between Namaqualand pioneer plant species, across two nutrient levels, were constructed. The ten species investigated were: Arctotheca calendula, Dimorphotheca sinuata, Foveolina albida, Gazania lichtenstei
Autor:
H. M. Steyn
Publikováno v:
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie. 15:109-115
The aim of this study was to investigate the effect of temperature and sowing date on the phenology of Ursinia cakilefolia, a Namaqualand ephemeral species. Seeds were sown on different dates and plants were subjected to various temperature treatment
Publikováno v:
South African Journal of Botany. 103:325
Publikováno v:
Journal of Arid Environments. 24:333-344
Fruit polymorphism, an adaptation to arid environments, was examined in four species of the Asteraceae, namely Dimorphotheca sinuata, Dimorphotheca polyptera, Arctotis fastuosa and Ursinia cakilefolia . The optimum germination requirements for both t
Publikováno v:
Phytochemistry. 31:863-880
From 12 Ursinia species, in addition to known compounds, 31 new sesquiterpene lactones, 10 being germacranolides, 19 guaianolides, one eudesmanolide and a rearranged one, were isolated. Furthermore, seven sesquiterpene acids and methyl esters, includ