Bract from pistillate inflorescence of Ambrosia trifida (giant ragweed). Lersten and Curtis. 1988. Amer. J. Bot. 75: 1313-1323.
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Bract from pistillate inflorescence of Ambrosia trifida (giant ragweed). Lersten and Curtis. 1988. Amer. J. Bot. 75: 1313-1323. |
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