Very complex stellar-looking ice crystals with multiple feathery tree branch-like structures. Different types of ice crystal habits are favored at different temperatures. The favorable temperature range for dendritic ice crystal growth is -10 to -20 ^oC but especially -15 to -16 ^oC. For more information consult the definition of dendrites in the AMS Glossary and information on the website SnowCrystals.com.