Pollen as large as about 90–100 µm. In angiosperms, during flower development the anther is composed of a mass of cells that appear undifferentiated, except for a partially differentiated dermis. As the flower develops, four groups of sporogenous cells form within the anther. The fertile sporogenous cells are surrounded by layers of sterile cells that grow into the wall of the pollen sac. Some of the cells grow into nutritive cells that supply nutrition for the microspores that form by meiotic division from the sporogenous cells. In a process called microsporogenesis, four haploid microspores are produced from each diploid sporogenous cell
Grains of Selim stews. Other regional names include "kimba" and "kili". In Senegal, The grains are a key ingredient in Touba-style coffee (called in French). Near the end of the roasting phase of making the coffee, grains of Selim, known in Wolof as , are added while the heat is still on. Roasting continues for approximately five more minutes; during this time the sneeze-producing scent of pepper becomes easily discernible. Grains of Selim Grains of Selim are the seeds of a shrubby tree, "Xylopia aethiopica", found in Africa. The seeds have a musky flavor and are used as a spice in a manner