My dear Sir!

Annexed I send you some seeds which my brother Fritz has collected for you and which two of his daughters arriving here from Brazil have brought along with.¹

Last year I have fertilised in different ways the two forms of Viola tricolor: a) the form with small yellowish flowers (var arvensis) b) the form with large gay-coloured flowers.² The descendants of them are now blooming in my garden. The results are as follows:

1) a) crossed with pollen of b). The flowers of the descendants are equal in size and colour to those of a). so that I am doubtful whether cross fertilisation has been of effect—self fertilisation always very early taking place

2) a) crossed with pollen of a) from a distant locality

The same result as in 1)

3) b) crossed with pollen of a) The flowers of the descendants are in colour equal to those of b) but in size much smaller, intermediate between a) and b)

4) b) crossed with own pollen Only 6 descendants have been obtained. Flowers in colour like those of the parents, in size much smaller, even smaller than in 3).

The fertilisation of a) offers great difficulty, the cavity of the stigma often being filled with pollen grains immediately after the opening of the flower. I have attempted to remove them but some ones may easily have remained.

Unfortunately this year I am too much overwhelmed with work to continue the trials with Viola tricolor, but certainly recommence them sometime and continue through some years.

With the most sincere respects | yours | very sincerely | H Müller