Black Lichen

• Size: Varies
• Seasonal Habits: Susceptible to drought
• Toxicity: Can Be Toxic

Lichens are interesting organisms. They are an important part of nature and are often useful for humans. They currently provide us with dyes and scents for perfumes. Historically, a few species have been used as food after a suitable preparation. In the future, lichens may provide us with antibiotics and sunscreen chemicals. Some species can withstand high levels of radiation. Others can be used as biological sensors that give us information about the environment. Some contain chemicals that may be harmful, however.