Midvein cross section of Ambrosia trifida (giant ragweed) leaf. Lersten and Curtis. 1988. Amer. J. Bot. 75: 1313-1323.
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| Secretory Cavities and Canals | |||||
| Curtis, Lersten, and Nowak 2002 rev. 2015 | |||||
Midvein cross section of Ambrosia trifida (giant ragweed) leaf. Lersten and Curtis. 1988. Amer. J. Bot. 75: 1313-1323. |
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