• 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 | 'Old observations on Diptera sucking Flowers' | Columbine has circle of nectaries & 5 pistils with points slightly reflexed from axis of flower, 1860-07-11 - 1860-07-17 | Columbine has circle of nectaries & 5 pistils with points slightly reflexed from axis of flower, 1860-07-11 - 1860-07-17

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Part of the Cambridge University Library Repository