RECORD: Darwin, C. R. n.d. Primula sinensis / Long-styled / Short-styled (tables and notes). CUL-DAR79.51-57. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/).

REVISION HISTORY: Transcribed and edited by John van Wyhe 6.2025. 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.


51

(54

Primula sinensis 1867

Long-styled

Short-styled

White Thread pollen of distinct plant same form

12 flowers fertilised

Black Thred pollen of same flower

White Thread distinct plant

Black Thred own pollen

51
50
31
27
30
33
17
0
25

29
27
19
31
24
36
39
36
21

38
18
32
31

only 4 set !

29
46
44
41
44
53

(8)

(9)

 

6 set

[=] 264

262

119

257

264 [÷] 8 [=] 33.0

average 29.1

average 29.7

average 42.8

 Compare with S fert

52

(1867

Chinese Primrose.

Long-styled

12 flowers with pollen from same Plant flower Black Thread

| | | | | | | | | | | |

12 flowers with pollen from a distinct long-styled Plant White Thread

| | | | | | | | | | | |

Short-styled

12 flowers with pollen from same flower    Black Thread

| | | | | | | | | | | |

12 flowers with pollen from a distinct short-styled plant. — white Thread

| | | | | | | | | | | |

(Many of these short-styled Plants were not properly short-styled but mid-styled & I doubt whether results can be trusted.) Yet will do, difference of pollen from same flower. & distinct plant of same form —

52v

Oxalis speciosa    mid-styled. —

fertilise with pollen from longest stamens of Short-styled form.    Black Wool — (Be careful not to touch pollen of shorter stamens of short-styled )

| | | | | | | |    

Short-styled fertilise 10 flowers with both own pollens         Black thread. —

| | | | | | | | | |

+ 2 by self = 12

(Long-styled 6 fl by pollen legitimately by stamen longer stamens of short-styled) (White Thread) 4 set (& all counted )

53

(55

P. sinensis

Aug. 25. 1867 Two Pots of Long-styled & 2 pots of short-styled, with seed in each on opposite sides sowed of seed fert. by pollen of same flower & by distinct plant of same form. (Aug. 25' no difference in the 4 Pots ). (Oct 6th. In Pot. I of ⸮ short Long-styled crossed finest, & 3 other pots no difference)

(Dec. 30' 67. In one pot Pot I of Long-styled, the crossed have decided advantage; in the 3 other pot, no difference; & the plants are beginning to flower  they are dwarf from being so crowded, & therefore from severe competition.

(Jan 8' 1868. This much difference has shown itself    that in all 4 Pots the crossed plants flowered a little before the self-fert. plants)

54

(55A

Primula Sinensis 1867. January

Wool to Plant means short-styled

Strng to do.    ― long-styled—

True long & short-styled forms alone crossed to compare growth of Legitimate & Illegitimate Plants The self-fert flowers of both forms fert. with pollen from same flower

Short-styled legit crossed . 15 fl.

do    illegit own flower pollen 25 fl—

Long-styled. legit crossed    15 fl

do    illegit own flower pollen    20 fl.

The plants were chiefly crowded seedlings which I raised some from flowers' own pollen ,& some from pollen of same form: so that all these plants were of illegitimate extraction. Some few flowers were done on seedlings from seed from Cattell. (Seeds gathered from above crosses August 1868 )

Aug 27    planted seed sown in 8 Pots — keeping the Illegitimate & probably Legitimate Plants distinct

55

Single Plants from Cattells

Probably Legitimate Plants

 

Short-styled Long-styled

Long-styled Crossed

Crossed

Self

Crossed

Self

29
27
29
27
33
25

11
20
34 —
15
38
21
20

(3)
4
34
46
37
48
29
43

28
(4)
24
20
23
30
36

[=] 170 [÷] 6 [=] 28.3

159 [÷] 7 [=] 22.7

237 [÷] 6 [=] 39.5

161 [÷] 6 [=] 26.8

28.3

46.0
28.3

22.7

30.6
22.7

Average of both lots

Taken together

As Lot on back of page are illegitimate, & Cattells plant on this side probably Legitimate, I see no use in averaging their fertility in mass.—

55v

Chinese Primrose 1868

Seed gathered August 1868.

Short-styled illegitimate Plants crowded together (see notes)

Certainly Illegitimate Plants

Crossed

31 59 47 46 51 42 46

Self-fertilised own flower smallish seed 36 46 (3) 17 28 30 28 14 (8)

(8) [=] 276 [÷] 6 [=] 46.0 245 [÷] 8 [=] 30.6 average

(Long-styled Crowded)

18

(5)

15

50

38

(8)

32

(85)

(Long-styled crowded)

(7)

37

(3)

19

27

25

17

14

19

18

19 [=] 148 [÷] 5 [=] 29.6 195 [÷] 9 [=] 21.6

(All seeds below 10 omitted on both pages)

56

72 [÷] 8 [=] 9 Average

72.25 [÷] 8 [=] 9.03 Average

72.5 125 [÷] 8 [=] 9.015

57

(55B

Chinese Primrose

(Dec. 6— 68 In all the Pots, the plants are to tip of leaves 6-7 inches high, but no marked difference of growth in any pot. )

(Jan 24'. 69. No difference can now be seen between two sides on general inspection, & no difference in number of flowers.— (The offspring of short-styled flowered before long-styled)

Height to tip of tallest leaf

crossed — self Pot I crossed flowered first Seedlings (& II.) from short-styled from Cattell 8 2/8 8 Pot II Both sides flowered together Cattell 7 1.2 4/8 8 5/8 Pot III. Crossed first, fl. Seedlings (& IV) from long-styled from Cattell. 9 4/8 9 3/8 Pot IV Crossed first fl. Cattell 8 4/8 8 2/8 Pot V Crossed flowered fl. Seedlings from my own illegitimate short-styled Plant, VI. do 9 3/8 9 Pot VI Crossed flower first 9 7/8 9 4/8 Pot VII Crossed first. Seedlings (& VIII) from own long-styled illegitimate Plants 8 4/8 9 4/8 Pot VIII Crossed first 10 4.8 10 [=] 72 1/8 72 2/8   

June 6' 1869 — on the whole not the least difference between the two sides !!!

(over )

57v

From these measurements of leaves, all that can be said is that 6/8 of pots if any difference we had rather taller leaves — In all pots the crossed flowered first, except in 1 in which the 2 sides flowered on same morning.—

(As the stain of illegitimacy long remains, & half the plants crossed & self-fert. were illegitimate, & as few plants in England probably exist without this stain, it is possible that native plants wd behave differently.)


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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 11 June, 2025