RECORD: Darwin, C. R. & Francis Darwin. 1880.01.19-20. Delphinium nudicaule. CUL-DAR209.6.66-78. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2022. 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 volume CUL-DAR209.6 contains materials for Darwin's book Movement in plants (1880).


[66]

Megarrhiza Delphinium nudicaule Jan 19 / 80

Dug up the specimen we looked at with an arched leaf appearing at the surface

This leaf has a sinuous petiole and at 11mm below the top of the arch, it comes out of a split in the united cotyledon-petioles

There is a second true leaf 5mm in length which has come out of the crack & is arched but strt

[annotated figure]

[67]

Delphinium

[Figure] HK 2 CL

leaf 1

tip of mid-petiole leaflet bent back by going up tube

old leaves sometimes have tip like this which seem to drop off

There is no plumule

[68]

[annotated figure]

I did not know where the ground line was. Has the 2nd leaf straightened

[69]

Delphin

In the full grown ones the tube runs up to nearly certainly nearly the top & it may go quite to top.

In young seedlings 8 or 10 mm high the the joined petioles are solid & there is no tube— I can answer for about the middle third

[sketch] (Plumule so small can play little part in bursting of tube) being solid

[69v]

48 HK8

In a section near top 09 58 HK4

[70]

Delphinium

[Figure] Vague permanganate line root

First leaf coming out, it was beneath the surface

Length of leaf from top of arch to lower end of split 4 mm, length of split 3.2 mm

Width of the bulb like swelling 2 mm — The amount of arching of the first leaf is not well accurate as I had to see it foreshortened.

[71]

[annotated figure] Second leaf begins to arch

[72]

[annotated figure] Jan 20 Delphinium

[73]

[annotated figure] Jan 20

[74]

[calculations not transcribed]

In a much younger specimen [illeg] I could see no external split & only found the plumule by tearing open the joined cot-petioles

The plumule is [illeg] 2 mm lower down than where the root hairs end; therefore there

[sketch] are root hairs on the cot-petioles.

[sketch] But in another the root hairs are on a level with plumule

[75]

Delphin Jan 20

The second leaf is may be only 2 mm long where the petiole of second 1st is 47 mm

[annotated figure] 2nd leaf bent, so:— it was quite free ie had not to be dissected out

another 2nd leaf 2 mm & quite strt straight, 1st leaf being about 15mm long

[76]

Delphinium

[annotated figure] leaf 2nd First leaf arching inside the tube

[77]

Delphin nudicaule

[annotated figure] side leaf first leaf showing that first leaf may be straight at first

[78]

[annotated figure] 2d leaf Showing arched when free of tube, but beneath surface of ground


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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 18 January, 2023