RECORD: Darwin, C. R. 1869.11.21-1871.07.19. Digitalis purpurea. CUL-DAR79.167. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 3.2023. 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 volumes CUL-DAR 76-79 contain material for Darwin's book Cross and self fertilisation (1876).
[167]
Jan 31— 1870 Measured to tips of Leaves
As planted separately no severe competition. Plants turned out of Pots as in last page — Now measured to tips of flower-stems
Pot |
Crossed |
Self |
Crossed |
|
Selfs |
|
|
|
|
No' of stems |
Height No of stems |
Height |
|
6 crossed |
7 |
|
8 |
58 6/ |
8 |
60 |
|
|
|
|
56 |
|
55 4/ |
7 crossed |
5 3/ |
|
13 |
57 6/ |
3 |
46 5/ |
|
|
|
|
58 |
|
23 |
8 crossed |
6 |
|
5 |
50 |
1 |
46 6/ |
|
|
|
|
[excised] |
|
45 2/ |
6 self |
|
6 1/ |
|
[excised] |
8 |
[excised] |
7 self |
|
6 3/ |
|
[excised] |
3 |
[excised] |
8 self |
|
5 1/ |
|
[excised] |
12 |
[excised] |
|
18 3/8 |
17 7/8 |
26 |
|
23 |
[excised]1/8 |
July 19— 1871. (2 flower-stems measured in each pot.)
(114
Digitalis purpurea (see Port about fertility of first crosses) Seeds. germ. on sand.
Nov. 21. 1869. The crossed plants in most pots are perhaps a shade finer than selfs — now about 5 inches to tips of leaves.
Measured to tips of Leaves, 2 finest plants on each side
Jan. 31 1870
Pot |
Crossed |
Self |
Crossed |
|
Self-fert |
|
|
|
|
No' of flower stems |
Height of do |
No' of stems |
Height of do. |
2 |
8 6/8 |
7 3/8 |
2 |
[excised] |
1 |
[excised] |
|
7 |
6 |
1 |
[excised] |
4 |
[excised] |
|
|
|
6 |
[excised] |
0 |
[excised] |
|
|
|
2 |
[excised] |
0 |
[excised] |
1 |
7 4/ |
6 5/ |
1 |
[excised] |
1 |
[excised] |
|
6 5/ |
7 |
1 |
[excised] |
1 |
[excised] |
|
|
|
8. |
[excised] |
1 (half) |
[excised] |
3 |
6 3/ |
6 5/ |
4 |
[excised] |
4 |
[excised] |
|
5 5/ |
6 |
7 |
[excised] |
0 |
[excised] |
|
|
|
4 |
[excised] |
0 |
[excised] |
|
|
|
1 |
[excised] |
0 |
[excised] |
5 |
5 6/ |
7 2/ |
9 |
[excised] |
2 |
[excised] |
|
6 5/ |
6 4/ |
5 |
[excised] |
1 |
[excised] |
|
|
|
(no fl.) but plnt alive. |
[excised] |
0 |
[excised] |
4 |
7 4/ |
5 4/ |
4 |
[excised] |
0 |
[excised] |
|
6 4/ |
5 2/ |
3 |
[excised] |
0 |
[excised] |
|
|
|
6 |
[excised] |
0 |
[excised] |
|
68 1/8 [÷] 10 |
64 1/8 [÷] 10 |
64 |
[excised] |
|
|
July 17. 1871. This second measurement was when flower-stems fully grown. The tallest on each plant measured.—
The plant had been turned out of pots into open ground; the balls not being disturbed.— Originally an equal number of plants had been planted; & all survived for a long time when planted out but many of the self were smothered, as soon as flower stems were developed. In Pot 4. all the self- died, but there was dead remnant of an attempted flower stem.— None of crossed died; & all grew magnificently covered with flower & pods.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 11 December, 2025