The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1881.11.03-04. Dionaea. CUL-DAR62.90. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 5.2023. 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 volume CUL-DAR62 contains for Darwin's papers 'The action of carbonate of ammonia on the roots of certain plants', 1882, F1800 and 'The action of carbonate of ammonia on chlorophyll-bodies', 1882, F1801.

[90]

Dionæa

Nov. 4th. 1881.

Short-roots of young plant, placed in C. of Ammonia 4 to 1000 at 9° 10' on Nov. 3d & examined at 9° on 4th— Roots much blackened — oblique coarse longitudinal slice showed an enormous amount of aggregation, generally almost black or orange or small colourless spheres. — All the rows of cells contained them.

Transverse section near tip — numerous dark spheres in cells scattered between epidermis & endoderm, not arranged in any order — Endoderm swarming with small dark spheres — In central tissue orange spheres & smaller colourless transparent ones — No tendency to alternation.

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