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Bartonia aurea

Try a little more seed

12 flowers crossed — 18 flowers self-fert.

The 12 crossed set 11 pods (ie 92 per cent) & all the seed weighed 5.27 gr

The 18 self set 15 pods (ie 83 per cent) & all the seed weighed 6.76

Therefor 15 pods of crossed would have weighed 7.18 grain, or the crossed seed to the self seed are as 100 : 94. —

In all cases when number of seed estimated by weight, as self seed are generally lighter, their number ought wd be rather greater; probably in this instance the proportion wd be as as 100 : 95.

The seed of the Bartonia looks so shrivelled that perhaps will not germinate.— (The self- seeds on sand germinated best & quickest.)

(May 24. 68 — Plants about 7 inches selfs have the advantage)

(June 14th Pot. II. self- flowered first.)

(July 6. 68 Plants now in full flower. — Only 2 Pots alive

Tallest Plant on each side measured.

Pot 2.	Crossed—	— Self
	31 inch	37 inches
Pot 4.	18 1/2	20 1/2

[43v]

[calculations not transcribed]

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Bartonia aurea A fresh set of crosses 1868

6 flowers twice crossed by self-produced 4 pods & these contained by eye rather more seed than the best of 7 pods spontaneously of the self-fertilised. — young flowers were crossed. & self-fertilised

12 flowers were self-fertile by self & produced only 7 pods as above.

These plants in pots in greenhouse produced no pods spontaneously.

(May 16— 1869 young plants about 1 inch high no difference)

(May 28 1869 In Pot II & III. a self-plant has died, but no other in any other Pots) (& opposite crossed pulled up.—)

June 5. 1869 Measured by Lettington before dying & when nearly full grown

Pot	Crossed	Self	Crossed	Self
1	7inch 4/8	9 inch	1 foot : 7 4/8	3 feet : 4 4/8 inch	Self flowered first
II	8 4/8	4 3/8	2 : 1	2 : 11	Crossed flowered first
	4	7 6/8	3. 0	1. 3 4/8
III	11 2/8	8 2/8	2. 7	1. 6	crossed flowered first
	3 7/8	3 2/8	1. 4	11 4/8
IV	7 6/8	7 2/8	1: 8	2: 8 4/8	Self flowered first
Total	✔   42 1.8	40.0 ✔	✔ 12: 3 4/8	12: 9 ✔
	Measured to extreme tips of longest leaves		Measured to extreme Points of Plant when dying & nearly full grown.		The plants were in full flower

In the 3 plants which survived to set seed some few pods, the fertility appeared about equal on crossed & self- sides.—

44

42.125 [÷] 6 [=] 7.02 Average    40 [÷] 6 [=] 6.66 Average

51

12ft. 3in 4/8 [x] 12 [=] 147.5 [÷] 6 [=] 24.58 Average    12ft. 9in [x] 12 [=] 153 [÷] 6 [=] 25.5 Average

147.5 [+] 31 [+] 18.5 [=] 197.0    153.    153 [+] 37 [+] 20 4/8 [=] 210 4/8