Volume 80, 1952
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Duration of Stages in Seed Development
The following table gives a comparison of the times taken, where known, for the seed of the species studied to reach certain stages of development,
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| N. fusca | N. truncata | N. solandri | N. menziesir | N. obliqua | N. procera | Fagus sylvatica | |
| Pollination | Ovules just forming | Ovules just forming | Ovules just forming | Ovules just forming | Ovules just forming | Ovules just forming | Ovules formed Appearance of nucellus |
| Pollination—To commencement of embryo-sac formation (weeks) | 5 | 5 | 5 | 5 | 5 | 5 | 2 |
| To embryo-sac formed (weeks) | 7 | 7 | 7 | 7 | 8 | 8 | — |
| To fertilization (weeks) | 10 | — | — | 9 | — | — | — |
| To maximum seed-fall (weeks) | 25 | 25 | 25 | 25 | — | — | 25 |