• Publications
  • Influence
Inferences of biogeographical histories within subfamily Hyacinthoideae using S-DIVA and Bayesian binary MCMC analysis implemented in RASP (Reconstruct Ancestral State in Phylogenies).
TLDR
Biogeographical analyses reveal that subfamily Hyacinthoideae has originated in sub-Saharan Africa, and indicates an early dispersal event to the Mediterranean region followed by a vicariance event, which resulted in Hyacintheae and Massonieae tribes.
Sagittanthera (Hyacinthaceae, Urgineoideae), a new buzz pollinated genus from the Eastern Cape Province of South Africa
TLDR
This genus is based on Rhadamanthus cyanelloides, an enigmatic species occurring in the Eastern Cape Province of South Africa, and it is demonstrated that pollen is released by vibration, clearly evidence that buzz pollination occurs in this new genus.
The Scilla plumbea puzzle: present status of the genus Scilla sensu lato in southern Africa and description of Spetaea lachenaliiflora, a new genus and species of Massonieae (Hyacinthaceae)
TLDR
A taxon from South Africa that has been hidden for more than 150 years within Scilla plumbea (Hyacinthaceae) is studied and described as a new genus and species Spetaea lacheneliiflora Wetschnig & Pfosser.
Austronea (Asparagaceae, Scilloideae), a new genus from southern Africa, including the description of seven new species
TLDR
Austronea is a new genus from South Africa and southern Namibia related to Fusifilum based on general inflorescence and flower morphology, but it differs from it by the leaves usually leathery and sometimes thickened.
Clarification of Massonia echinata and some other frequently misunderstood Massonia species (Asparagaceae, Scilloideae), with the description of M. pseudoechinata and M. roggeveldensis
TLDR
This study shows that the current concept of M. echinata, including M. angustifolia and M. lanceolata as synonyms, includes two unpublished species which are here described as M. pseudoechinata andM.
Massonia inaequalis (Asparagaceae, Scilloideae), a distinct new species from South Africa
TLDR
Asparagaceae subfamily Scilloideae, tribe Hyacintheae is alternatively regarded as Hyacinthoidae, a treatment the authors favour.
Systematic Position of Three Little Known and Frequently Misplaced Species of Hyacinthaceae from Madagascar
TLDR
Supporting evidence is found that U. volubilis is not a member of the subfamily Urgineoideae but belongs to theSubfamily Ornithogaloideae with strong affinity to the Stellarioides/Albuca/Coilonox clade.
Corticolous Species of the Genus Rinodina (Lichenized Ascomycetes, Physciaceae) in Southern Africa
TLDR
Corticolous species of the genus Rinodina (lichenized Ascomycetes, Physciaceae) in southern Africa are recorded and characters, distribution and habitats are discussed.
Antiproliferative Bufadienolides from the Bulbs of Drimia altissima.
TLDR
The bulbs of the South African Drimia altissima have yielded a range of previously undescribed bufadienolides, which showed activity at the nanomolar level against a number of human cancer cell lines in the NCI-60 screen.
Desertia, a new genus in Massonieae (Asparagaceae, Scilloideae), including the description of Desertia luteovirens and the taxonomic revisions of Whiteheadia and Namophila
TLDR
The Desertia gen. nov., which belongs to tribe Massonieae, is described from south western Namibia and north western South Africa and can be clearly differentiated by the papillose bracts, subcampanulate flowers with straight, suberect or slightly spreading free portion of tepals and the rugose seeds.
...
...