Pollen found in river

From the characteristic shape, this may be the pollen of a coniferous plant.

Commentary by Prof. Yuji Tsukii, Hosei University
This picture shows pollen from a coniferous plant.

Similar pictures can be seen at the following address:

http://protist.i.hosei.ac.jp/PDB/Im.....

Sampling Date : 03 July 2009

Sampling Site : Hirose River B  Google Map