• Darwin Archive | 'Cross and self fertilisation': portfolios, 1840s-1876 | 'Cross and self fertilisation': experimental results, continued | 'Cross and self fertilisation': experimental results, continued | Dichogam / Campanula carpathica seeds profusely exposed (does it produce nectar, I have noticed only pollen-gatherers at work), 1862-10-04 | Dichogam / Campanula carpathica seeds profusely exposed (does it produce nectar I have noticed only pollen-gatherers at work), 1862-10-04

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