Reference herbarium specimens of
studied species were prepared and kept in the herbarium of
Botany and Microbiology Department, Faculty of Science
(Girls Branch) Al-Azhar University. For seed morphology,
five to seven seeds were investigated to record their dimensions,
shape, color and surface texture. Details of seed sculpture
were examined by a JEOL JSM – 5500 scanning
electron microscope operated at an accelerated voltage of
20 kV and photographed. The terminology of Barthlott
(1981, 1990) and Stearn (1992) was adopted to describe the
SEM aspects of the seed coat.