. Elementary botany. Botany. 430 RELATIOM TO ENVIRONMENT. anthesis extends over a period of time, as it favors cross pollina- tion, favors tlie formatinn of seed in case conditions slionld lie. «»-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Atkinson, George Francis, 1854-1918. New York : H. Holt

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