[2]

July 6 67.─ Buck-wheat – Fagoyrum esculenti

Hildebrand discovered was dimorphic.─

8 stamens ─ 3 stigmas much nectar ─ In long-styled, styles much longer & stigmas projecting above all own anthers = to those of short-styled.

Stigmas of 2 forms not different.

Pollen in short-styled form 16-17/7000 short 16.5 to 13.5 100 to

─ long-styled 13-14/7000 (B)

How odd the rule is in plant so widely remote in series. Considering Lythrum & Oxalis especially, it is difficult not to believe, that cœtums paribus a larger gain is required to present longer pistil.─ But rule not by no means fixed & no better example that Brugmansia arborea, with a pistil 9 1/4 inches long & pollen-grains 17/7000 in diameter in water, ie same length as above.─

[in margin:] Keep general conclusion

[2v]

July 13 14

(I have crossed roughly some tufts of both forms with pollen of same forms, & of both with pollen of same form from distinct plant.)

Sept 24th About a dozen plants of both forms under not, now they are setting freely, both forms, but not so freely as exposed plants.─ Early in season they set hardly any, except those which were artificially fertilised, & especially except those crossed.

apparently these fulfill less than most plants by heteromorphus union,─ but not possible to to know without careful counting.─