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Darwin, Charles, 1809-1882

"The Different Forms of Flowers on Plants of the Same Species"


TABLE 2.15. Both forms of the Oxlip crossed with Pollen of both forms of the
Cowslip, P. veris.
Column 1: Illegitimate union.
Short-styled oxlip, by pollen of short-styled cowslip: 18 flowers fertilised,
did not produce one capsule.
Column 2: Legitimate union.
Short-styled oxlip, by pollen of long-styled cowslip: 18 flowers fertilised,
produced three capsules, containing 7, 3, and 3 wretched seeds, apparently
incapable of germination.
Column 3: Illegitimate union.
Long-styled oxlip, by pollen of long-styled cowslip: 11 flowers fertilised,
produced one capsule, containing 13 wretched seeds.
Column 4: Legitimate union.
Long-styled oxlip, by pollen of short-styled cowslip: 5 flowers fertilised,
produced two capsules, containing 21 and 28 very fine seeds.
TABLE 2.16. Both forms of the Oxlip crossed with Pollen of both forms of the
Primrose, P. vulgaris.
Column 1: Illegitimate union.
Short-styled oxlip, by pollen of short-styled primrose: 34 flowers fertilised,
produced two capsules, containing 5 and 12 seeds.
Column 2: Legitimate union.
Short-styled oxlip, by pollen of long-styled primrose: 26 flowers fertilised,
produced six capsules, containing 16, 20, 5, 10, 19, and 24 seeds. Average 15.7.
Many of the seeds very poor, some good.
Column 3: Illegitimate union.
Long-styled oxlip, by pollen of long-styled primrose: 11 flowers fertilised,
produced four capsules, containing 10, 7, 5, and 6 wretched seeds.


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