Question: Found in Porter Square, Cambridge. This grass is small.
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Question
Found in Porter Square, Cambridge. This grass is small.
Answer
Dear whiten, you've photographed a species of Cyperus (flatsedge), a member of the Cyperaceae (sedge family). I can't tell you which species you have without more photographs of the diagnostic traits (such as fruit, underground organs, etc.). You most likely have Cyperus lupulinus (Great Plains flatsedge), a native species of New England.
