Radiant spider web like colonies
When we tried to assess the quality of air with settle plate technique we isolated some spider web like colonies. They might be Bacillus mycoides . It is quite amazing that this bacteria has two types of curvature ie., clockwise and counter clockwise. A strain can produce either curvature not both. The direction of curvature can be changed by altering NaCl concentration. Source and Further reading http://crf.flib.u-fukui.ac.jp/dspace/bitstream/10461/14980/1/kiyou46.p9-14.pdf