RECORD: Darwin, C. R. 1-27.08.1862. [diagrams of pollen from differently-styled stamens of Lythrum]. CUL-DAR27.2.B24-B32,B32bis. Edited by John van Wyhe (The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed and edited by John van Wyhe 7.2025. RN1

NOTE: Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin.

Darwin excised various portions and annotated others.


B24

Aug 11 1862

[sketch]

Long stamens of Long styled Lythrum

Short stamens of Short-styled Lythrum.

B25

Aug 27 62

[sketch]

Long stamens of Long pistilled Lythrum.

Short stamens of long styled

(glass with a ledge)

Long stamens of Long styled L.

B26

Aug 27 62

[sketch]

Long stamens of Long pistilled styled Lythrum.

(with no rim on glass)

Short stamens of short styled Lythrum

B27

Aug 11 1862.

C

[sketch]

Long stamen pollen of Long styled L anther more open than in other two beginning to whither — strongest powered — soaked 4 or 5 min.

Short of pollen from other

B28

Aug 27 62)

[sketch]

Short stamens of long styled Lythrum

(glass without rim)

Short stamens of middle styled.

B29

Aug 14

[sketch]

long stamen pollen of long styled Lythrum

soaked two minutes - been gathered two days

a well opened fl. — strongest power

long stamen pollen of Long styled L- strong

B30

Aug 14

[sketch]

Short sh. sh. styled

one minute in water

Long st. of do

B30v

Lythrum

B31

Aug 9 1862

B

[sketch]

Long stamen's pollen of S. pistilled Lythrum after soaking &c anthers not opening

Long stamens of Short styled L. after soaking &c — anthers just opening

strongest power - plant kept same time as A

Short stamen pollen of L. styled Lythrum &c

B32

Aug 9 1862

A

[sketch]

pollen of short stamen of m style Lythrum

anthers just open — pollen soaked from 3-4 minutes in water

under strongest power — flowers have been kept 3 or 4 days but not whithered

Cam. lucida

pollen of long stamen, do —

of long stamens of ditto

ditto—

ditto—

B32v

[sketch]

B32v

 Drawn Cam. Lucida. Aug 1. 62

The measurings by the micrometer seem unequal —and make it more difficult to judge of the sizes

[sketch]

Short stamen's pollen from same flower under same power—

Micrometer lines

Long stamens pollen from Long styled Lythrum.

Lythrum — open flower —anther valves just beginning to open.

under strongest object glass and eye piece


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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 3 July, 2025