macrostachya Family: Cyperaceae (rush) Habitat: vernal pools, wetlands Size: Plants are up to 24 inches tall; stem
looks like a long green straw with a tiny pine cone-like flower
at the tip.
For 2 billion years, bacteria were the only creatures on Earth.
Long before the dinosaurs, a special type of bacteria slowly
increased the level of oxygen in the Earth’s air to 20 percent.
Without this oxygen other plants and animals could not have
evolved, including us.