• 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. | Trifolium minus - Pistil but little curved shoot - It does not appear that moving wing-petals causes protrusion of stamens & pistil, 1809-07-16 - 1882-07-16

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