RECORD: Darwin, C. R. 1878.06.11-13. Oxalis Valdiviana / Draft of Cross and self fertilisation.CUL-DAR209.14.98. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and John van Wyhe, edited by John van Wyhe 7.2023. RN2
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR209.14 contains material for Darwin's book Movement in plants (1880). Draft is in the hand of Ebenezer Norman with corrections by Darwin. The text of the draft corresponds to Cross and self fertilisation, p. 379.
[98]
Ox. Valdiviana
Left Hand Leaf
Right-Hand leaf
June 11' June 11th
10º 45 disturbed 10. 45 disturbed
11º 12 down 11. 12 to left
11. 55 far down 11. 55. down
12. 55 far up 12. 55 far up
1. 57 very little up 1. 57 to right & far down
3º up 3º up
4' a little to right only an atom 4º a little down
5º 10 to left 5 . 10 down
6. 7 to right on level 6 7 up.
7º 18' down 7º 18 far down
9º far below glass 9º far below glass
10. 30 very almost perpendicular 10. 30 almost perpendicular
(Used)
(Used)
From 11º. to 6º circumnutate
Must rise very Early in morning
after 6º 50' in morning falling
12'
12th
6º. 50 6º 50
8º 45 a little to left 8º 45' far down
10 15 down 10. 25 far down
11 . 13 up 11. 13 up
12. 12 same spot 12. 12 up & to right little
1º down 1º nearly same spot
2º to left horizontally, on dotted line 2 — up same course
3º 5' down short way thick line 3º. 5 to right horizontally.
4º down rather more 4º up a little & to left
5 down & to left 5. up a little & to left
6. down 6 down
7. 15 vertically down 7º 15 vertically down
13
From 11º to about 5'
⨀ 6º. 50 13th 6º 50 ⨀
8º. 15 8º. 15
[98v]
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a laughable idea that pollen should be brought from flowers of the same species, none of which grew nearer than between 500 and 600 yards.*(b) The result was that 289 of these 520 flowers yielded no seed, or seed that did not germinate; the seed of 29 flowers produced hybrids, such as might have been expected from the nature of the pollen employed; and lastly, the seed of the remaining 202 flowers produced perfectly pure plants, so that these flowers must have been fertilised by pollen brought by insects from a distance of between 500 and 600 yards.*(c) It is of course possible that some of these 202 flowers may might have been fertilised by pollen left accidentally in them when they were castrated; but to show
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 20 December, 2025