interesting, star-like, mushroom was named “Astraeus” after Astraeus,
the father of stars in the ancient Greek mythology. Its “star rays”
behave like a barometer. They measure the humidity in the air and if
humidity is enough they open up to expose the spore sac. If not, they
remain closed to protect it from dry conditions. Because of this
behavior the mushroom was named hydrometricus which is also of Greek
origin and means “water- measuring”.