• Darwin Archive | 'Cross and self fertilisation': portfolios, 1840s-1876 | 'Cross and self fertilisation': observations on insects visiting flowers and 'Cross and self fertilisation' experiments, 1840s-1860s | Insect visits and/or cross and self-fertilisation experiments; Dichogamy. | Broom / Wing-petals do not at all cohere but each rests on horn-like projection from the keel & thus serves to depress the latter [application of ether], 1866-05-01 - 1866-05-31 | Broom / Wing-petals do not at all cohere but each rests on horn-like projection from the keel & thus serves to depress the latter [application of ether], 1866-05-01 - 1866-05-31

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