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Questions and Answers: 2020

Question: Good afternoon Dr! Last year I asked for help with a sedge and your response was C. vulpinoidea. Last night …

  • Question

    Good afternoon Dr! Last year I asked for help with a sedge and your response was C. vulpinoidea. Last night as I was examining some perigynia I remove the ovary/achene from a perigynium. The ovary/achene seems to resemble the image posted for Carex annectens. This sedge is growing in my yard and the nutrients may be lacking to allow the plant to develop to its full potential. The inflorescence was about 2 cm long. I would appreciate your input. Thank you for you response :)

    Answer

    Dear califyank, good morning. The best way to identify between Carex annectens and Carex vulpinoidea is the leaf length relative to the flowering/fruiting stems. Carex annectens has stems that conspicuously surpass the height of the leaves, C. vulpiniodea has stems that are about the same height as the leaves. The other characteristics are far more subtle and require knowledge of both species. The perigynia you photographed (very nicely, by the way) are not mature so the colors are not yet diagnostic. The beak length does seem to fit better for C. vulpinoidea. Best wishes.