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
The Torment of a Flower The Torment of a Flower The Torment of a Flower (), also known as Rainy Night Flower, is a Taiwanese Hokkien song composed by Teng Yu-hsien (; 1906 - 1944) and written by Chou Tien-wang (). A Taiwanese writer Liau Han-sin (廖漢臣) wrote the lyrics of a children's song ""Spring"" (春天) and gave it to Teng Yu-hsien to ask him to compose for it, it's the earliest version of "The Torment of a Flower." Although Teng is a Hakkan, he usually composed with Taiwanese Hokkien but not Hakkan. It is worth noting that some scholars have questioned this story about