The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R.; Francis Darwin. n.d. Hottonia / Distance from middle of anther to middle of stigma. CUL-DAR110.A18. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2023. RN1

NOTE: Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR108-111 contain material for Darwin's book Forms of flowers (1877). See record in the Darwin Online manuscript catalogue, enter its Identifier here.

[18]

Hottonia

Distance from middle of anther to middle of stigma in short-styled is li same distance in long-styled as 100: 71

So that distance greater in short-styled & than are the more sterile with own pollen

Anther of short-style li anther of long as 100 82.6

3 flowers of each measured

But Frank says same rule holds good with P. angustifolia & in the short-styled is far more fertile than long-styled with own pollen.

So it is with [illeg] grandiflorum — Hence rule first altogether with dimorphic plants

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