Cyperus alternifolia

Umbrella plant is a close cousin of the papyrus plant of ancient Egypt, which it resembles. Like papyrus, it also forms clumps in wet and boggy areas, although it will thrive in drier situations as well. Also like papyrus, all the leaves are arranged atop triangular stems. But while papyrus has 12 wiry leaves, those of umbrella plant are narrow and flattened and only 6 to 10 long. They are symmetrically arranged around the stem in a disk, resembling the petals on a daisy. Small greenish flowers ...