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: 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.

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