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General Results of Unions

Pulmonaria angostifolia Isle of Wight July 1864

Long-styled.— 18 fl. fert. heteromorphically by pollen of short-styled produced 9 pods (seeds (these are my pods)), which contained average 2.11 seed.— not one contained 4 or maximum no. of seed; but 4/9 contained 3 seed.

(18 flowers fertilised by own-form pollen produced not one seed.) or vestige of seed

(Under the net, & so excluded from Bees there were 138 fl. & not one produced any seed; yet I shd think considering horizontal & often depending position of flowers own pollen cd have fallen on some of the long stigma from short anthers.)

(Uncovered flower & which I saw visited by Humble Bees, (but with short-styled plants all protected) were 145 in number produced by two plants & not one produced a seed or vestige of seed.—)

[Insertion:] Ask how pollen drawn to flower

(Hence long-styled with own form pollen absolutely sterile.)

[4 words illeg] 5 P.m

Short-styled.— of 18 fl. fert. heteromorph. by pollen of long-styled; 15 produced seed, on average 2.60 to each; of the 15 4/15 produced maximum number of 4 seed & 4/15 produced 3 seed.—) & 8/15 produced 3 or 4 seed; this in fact is shown by large average number of seed.—

Of 12 flowers fertilised Homomorph by own-form pollen 7 produced seed; on average 1.86 to each flower: 1/7 produced 4 seed & some produced 3 seed. This is 1/4 of seed less to each flower than the product of long-styled heteromorphically crossed.

(Under the net, with Bees excluded there were 28 flowers, of these only 2 produced each 1 seed.—)

(Of flowers exposed to Bees, (with long-styled protected) a great number large proportion produced seed; probably half; for I gathered 3 branches which produced 31 flowers & of these 16 had produced seed.

[Pencilled line many words illeg]

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General Results

Pulmonaria short-styled (continued)

The average production of seed by the flowers, which yielded any seed was well ascertained, for 233 of such were collected & these yielded an average of 1.82 seed to each.

Of 233, 16 produced 4 seed (16/233 is the average to get)

— 31 — 3 seed.

— 47 produced 4 or 3 seed, ie nearly 1/5 of whole number

= what a contrast with short-styled by long-styled pollen =

= [calculations not transcribed]

The plants consisted of long-styled of which all the pods were collected.

14 short-styled (not all gathered)

1 did not flower—

[calculations not transcribed]

of Pulmonaria officinalis seedlings from Leith H. (see notes on its fertility there) 4 or 5 5 or 6 plants flowered (I think there is note of number & all were long-styled. This makes me think that the parents were homomorphic seedlings themselves— With 7 flowers were fertilised with own pollen & not one produced any seed— On all plants together, only 6 flowers produced any seed, & there were 1, 3, 2, 1, 1, ,1, — average of 1.5 seed.

Plants were young but looked vigorous & healthy.—