Abstract
Examinations were made on the pollens of Forsythia koreana and other species by paper chromatography in an attempt to confirm the pollen flavonoid component of forsythia which has two types of flower, one being short-styled and the other, long-styled. It had been reported that rutin is present in the pollens from the former and quercitrin in the pollens of the latter, and that a satisfactory fertilization would be prevented without the action of these different glycosides of quercetin. However, as far as the present series of experiments were concerned, it was found that rutin is solely present as the flavonoid pigment, and glucose and fructose as the free sugars. Lactose was not detected from any of the pollens.
