The crossed plants were, however, inferior in fertility to the
self-fertilised. Six of the finest plants were selected out of the
forty-seven crossed plants, and six out of the forty-one self-fertilised
plants; and the former produced 598 capsules, whilst the latter or
self-fertilised plants produced 752 capsules. All these capsules were
the product of cleistogene flowers, for the plants did not bear during
the whole of this season any perfect flowers. The seeds were counted in
ten cleistogene capsules produced by crossed plants, and their average
number was 46.4 per capsule; whilst the number in ten cleistogene
capsules produced by the self-fertilised plants was 49.4; or as 100 to
106.
3. GESNERIACEAE.--Gesneria pendulina.
In Gesneria the several parts of the flower are arranged on nearly the
same plan as in Digitalis, and most or all of the species are
dichogamous. (3/11. Dr. Ogle 'Popular Science Review' January 1870 page
51.) Plants were raised from seed sent me by Fritz Muller from South
Brazil. Seven flowers were crossed with pollen from a distinct plant,
and produced seven capsules containing by weight 3.01 grains of seeds.
Seven flowers on the same plants were fertilised with their own pollen,
and their seven capsules contained exactly the same weight of seeds.
Germinating seeds were planted on opposite sides of four pots, and when
fully grown measured to the tips of their leaves.
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