Total : 82.88 : 54.75.
Total of both lots:
: 144.63 : 99.75.
As the plants of the two lots are few in number, they may be run
together for the general average; but I may first state that the height
of the seedlings from the cross between two individuals of the red
variety is to that of the self-fertilised plants of the red variety as
100 to 73; whereas the height of the crossed offspring from the two
varieties to the self-fertilised plants of the red variety is as 100 to
66. So that the cross between the two varieties is here seen to be the
most advantageous. The average height of all six crossed plants in the
two lots taken together is 48.20, and that of the six self-fertilised
plants 33.25; or as 100 to 69.
These six crossed plants produced spontaneously twenty-six capsules,
whilst the six self-fertilised plants produced only two, or as 100 to 8.
There is therefore the same extraordinary difference in fertility
between the crossed and self-fertilised plants as in the last genus,
Cyclamen, which belongs to the same family of the Primulaceae.
Primula veris. British flora. (var. officinalis, Linn.).
THE COWSLIP.
Most of the species in this genus are heterostyled or dimorphic; that
is, they present two forms,--one long-styled with short stamens, and the
other short-styled with long stamens. (6/6. See my paper 'On the Two
Forms or Dimorphic Condition in the Species of Primula' in 'Journal of
the Proceedings of the Linnean Society' volume 6 1862 page 77.
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