Micromorphology of Barleria albostellata (Grey Barleria) Flower and Pollen Grains

Barleria albostellata C.B. Clarke (grey barleria, Acanthaceae) is an indigenous shrub to South Africa and has been relatively understudied. This a valuable medicinal plant with wide spectrum of antibacterial anti-inflammatory activities. Detailed studies on the floral pollen morphology B. are rare. study was conducted observe flower grains using stereomicroscopy scanning electron microscopy (SEM). Morphological observations showed numerous non-glandular trichomes bracteoles bracts albostellata. Three types were identified these structures: I—unicellular, II—multangulate-dendritic branched trichomes, III—capitate glandular trichomes. A taxonomical description structures stereo SEM micrographs provided. revealed as globose tricolporate rough honeycomb exine, small granules inside lumina. The diameter 77.53 ± 5.63 μm, whereas aperture 14.31 0.59 µm. provides insight into biology albostellata, results presented here will add body knowledge encourage further research this species.