[377]

Stapelia roof

[data not transcribed]

[377v]

The same flower, we shall find that these are 15 species of which the crossed offspring are non-castrated flowers of these 15 species, were greatly superior in is height, weight and fertility, to the self-fertilised offspring*. It may be worth while to recall to the reader's mind some details on this head. With For instance with Ipomœa [text excised] every single intercrossed plant exceeded in

[Cross and self fertilisation, pp. 396-97: "Thus in Tables A, B, and C, there are at least fifteen species which are self-fertile when insects are excluded; and this implies that their stigmas must receive their own pollen; nevertheless, most of the seedlings which were raised by fertilising the non-castrated flowers of these fifteen species with pollen from another plant were greatly superior, in height, weight, and fertility, to the self-fertilised offspring.*
* These fifteen species consist of Brassica oleracea, Reseda odorata and lutea, Limnanthes douglasii, Papaver vagum, Viscaria oculata,
For instance, with Ipomoea purpurea every single intercrossed plant exceeded in height its self-fertilised opponent until the sixth generation; and so it was with Mimulus luteus until the fourth generation."]

[378]

Stapelia (Moved Pot)

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378v]

cowslip (Primula. veris) plenty of pollen from from the same plant, and after 24 hours some was added from a short-styled dark-red Polyanthus, which is a variety of the cowslip. was added. From the flowers thus treated 30 seedlings were raised, and all these without exception bore reddish flowers; so that the [text excised]

[Cross and self fertilisation, pp. 396-97: "Secondly, I placed on several stigmas of a long-styled cowslip (Primula veris) plenty of pollen from the same plant, and after twenty-four hours added some from a short-styled dark-red Polyanthus, which is a variety of the cowslip. From the flowers thus treated thirty seedlings were raised, and all these without exception bore reddish flowers; so that the effect of the plant's own pollen, though placed on the stigmas twenty-four hours previously, was quite destroyed by that of the red variety."]