November 18. 2021
Stratford’s Hidden Universe
#stratfordhiddenuniverse #stratfordshiddenuniverse #stratfordecology #stratfordctecology #lichen #tree #parks #nature #openspace #forest #history #stratfordct #symbiosis #rocks #NorthAmerica #worldwide flavoparmeliacaperata #commongreenshield #dye #salve #wrinkled #palegreen
A Wrinkled Beauty
Flavoparmelia caperata: Common Greenshield Lichen
Flavo: Latin for “yellow”. If you read up on nutrition, flavonoids are the good colors in fruits and vegetables.
Parma: shield
Parmelia: little shield
Caperata: wrinkled
Common Greenshield Lichen can be found worldwide as well as right in our own backyards. Unlike most lichens, they can tolerate heavier polluted areas and have been found the first to come back to an area after some type of clearing, whether it be a fire, construction, or some other kind of decimation. Yet like most lichen, they provide an extra source of oxygen and food for creatures like deer, squirrels, and hummingbirds.
Even though called “Greenshield” in English, their Latin name more closely describes their pale yellow-green surface color when dried out. Like other foliose lichen (see November 11, 2021), when faced with large amounts of water, they turn a darker green when wet. Common Greenshield Lichen look like pieces of lettuce stuck to the bark of broadleaf trees, the type of trees they most prefer. They reproduce asexually (neither male nor female) from their centers. In their centers resides a bump/ pustule looking structure that produces “soredia”. Soredia are powdery cells made of algae covered in fungus that are released and blown into the wind. The soredia come to rest on different types of objects yet only survive in ideal circumstances, especially on broadleaf trees.
Humans have used Common Greenshield Lichen to dye wool and ground down as a powder for burns.