• 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. | Fumaria officinalis / The hood covering curved pistil lies close to nectary so the insect forcing way to nectary wd certainly rub stigma, 1858-06-02 | Fumaria officinalis / The hood covering curved pistil lies close to nectary so the insect forcing way to nectary wd certainly rub stigma, 1858-06-02

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