RECORD: Darwin, C. R. 1869.11.21-1871.07.19. Digitalis purpurea. CUL-DAR79.167. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 3.2023. RN1

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

[table not transcribed]

As planted separately no severe competition. Plants turned out of Pots as in last page — Now measured to tips of flower-stems

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 [table not transcribed]

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.


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 31 May, 2023