(1987)  Page(s) 193.  Includes photo(s).
 
Paeonia emodi. Pollen variant (type B) showing a partial septum projecting from the intine (marked by asterisks).

...The nuclei, for instance, are located adjacent to each other in cytoplasm surrounding a single large vacuole. The cytoplasmic content of the variants is also similar to that of the residual spores, there being no indication of the intense cytoplasmic activity normally associated with the microspore division. When a partial septum is present (Fig., 12) it is seen to be thin and structureless and to project from the intine, terminating in the cytoplasm close to the tonoplast. There is no marked accumulation of lipid droplets against the septum, and, unlike the perforate wall found in some type A variants, it shows no obvious thickening at the junction with the intine. The variant depicted in Fig. 12 is particularly interesting in that the juxtaposition of nuclei and cytoplasm is such that the septum appears to have developed independently of the nuclear division.