RECORD: Darwin, C. R. 1842.07. [Note on Nasturtium]. CUL-DAR205.1.32. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 8.2021. RN1

NOTE: The brown crayon number '20' indicates that this document was filed by Darwin in his portfolio for the subject of Island endemism: plants.

Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR205.1 contains notes on rudimentary organs.


[32]

(3) Properly Chymocarpus pentaphyllus. The Tropæolum majus or Nasturtium. The scales or little petals are developed into five large petals the three upper ones which in this flower seem harder to [illeg] make the 3 fringed upper petals in Nasturtium. The nectary must be the calyx with abortive petals in this flower - variable abortive part & returning to proper state

Shrewsbury July 1842

[32v]

Abortion & Retrograde good

[partially excised:] common that are fertile.

(20)

In one plant of tropeolum pentifolium on the lower side of the mouth of the nectary on the inside there is one or two little petal-like scales one of which is often more developed than the other in a seedling plant from this these scales form 2 good sized petals & in (3)

some flowers 2 or 3 other petals on the upper side. In the former plant the scale extremely minute & on the right hand side looking into nectary often entirely adhering. What is the nectary? & what are these petals. What is the fimbrated organ in the yellow tropeolum?


Return to homepage

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

File last updated 16 October, 2023