Disa staerkeriana (Orchidaceae): a new species from Mpumalanga, South Africa

Gymnanthemum koekemoerae (Compositae, Vernonieae), a new species from South Africa

A new species of Gymnanthemum (Compositae, Vernonieae) from South Africa is described. It can be distinguished from other species in the genus by the five-flowered capitula and widely obtuse leaf blades.

Antibacterial activity of extracts of three Croton species collected in Mpumalanga region in South Africa.

The antibacterial activities of three Croton species were compared using bioautography and the serial microdilution methods. The methanolic extracts of all the species had low activity against Escherichia coli. The highest activity was observed with Croton megalobotrys against Enterococcus faecalis with a minimal inhibitory concentration (MIC) value of 0.02 mg/ml. Croton steenkapianus extracts ...

Maize and Pigeonpea Intercropping Systems in Mpumalanga, South Africa

Gastrodia kachinensis (Orchidaceae), a new species from Myanmar

Gastrodia kachinensis, a new species of Orchidaceae, is described and illustrated from Putao, Kachin State, Myanmar. It is morphologically similar to G. gracilis, presumably its nearest relative, but can be easily distinguished from the latter by having perianth tube with punctate outer surface, verrucose outer surface of sepal lobe, orbicular petals, ovate-elliptic lip with truncate apex and a...

Telipogon diabolicus (Orchidaceae, Oncidiinae), a new species from southern Colombia

A new species of the orchid genus Telipogon, Telipogon diabolicus, is described and illustrated. The information about its habitat is provided. The novelty resembles Telipogon tabanensis and Telipogon guacamayensis and it is characterized by the translucent flowers, the glabrous, distinctly clawed petals, the transversely elliptic lip, and the gynostemium ornamented with long setose hairs on bo...