Pear-pollination. Bartlett. Seeds from hand, self, land cross-pollinated Bartlett pears. Those at the top, nearly seedless, are self-pollinated; the remainder, with 6 to 10 perfect seeds, are cross-pollinated.

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Unknown. “Pear-pollination. Bartlett. Seeds from hand, self, land cross-pollinated Bartlett pears. Those at the top, nearly seedless, are self-pollinated; the remainder, with 6 to 10 perfect seeds, are cross-pollinated..” Special Collections, USDA National Agricultural Library. Accessed October 15, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/283.