RECORD: Darwin, C. R. 1862.05.24. [Note on Orchis ustulata.] CUL-DAR70.10-11. 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: 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-DAR70 contains material for Darwin's book Orchids (2d ed. 1877).


[10]

May 24 1862. O. ustulata. Mr Malden. The caudicle is depressed symmetrically over the viscid disc

As far as I can make out, the ends of pollinia glance off bases of anther cell & strike the 2 lateral stigmas perhaps moths do not insert quite symmetrically but they must nearly symmetrically, as labellum deeply furrowed.

I looked at vast number of O. aranifera extremely few pollinia removed. I could not clearly detect gnawing or penetration of labellum. Stigma is much overarched & lies rather concealed.

[11]

May 24th. Orchis ustulata - I have looked again, certainly caudicle where depressed as in line of long axis of disc. The 2 discs are embedded parallel

I can only guess glance off & thus strike stigma [illeg] say do not understand.

Act of depression very like in O. conopsea, by depression of uniting in front - heel part longer than in O. conopsea.

1862


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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 25 September, 2022