[16]

Cassia floribunda

1/2 scale no lettering

F 165

626

Chap. E 10

by this treatment. Of these racemes only Only three of them produced any pods, each a single one; and these three pods contained one, four, and five seeds. So that only one 2 a single pod from the se racemes included a fair complement of seeds.

Cuphea purpurea (Lythraceæ) produced no seeds, whilst other flowers on the same plant artificially fertilised under the net yielded seeds.

Vinca major (Apocynaceæ) is generally quite sterile, but sometimes sets seeds when artificially fertilised: see my notice Gard. Chronicle, 1861. p. 552.

V. rosea (d°) behaves in the same manner as the last species: Gardeners' Chronicle, 1861. p. 699, 736, 831.

Tabernæmontana echinata. (d°). quite sterile.

Petina violacæa (Solanaceæ), quite sterile, as far as I have observed.

Solanum tuberosum (d°) Tinzmann says (Gard. Chronicle, 1846 p. 183) that some vars. are quite sterile unless fertilised by pollen from another variety.

[Cross and self fertilisation, p. 362: "Cytisus laburnum (Leguminosae).—Seven flower-racemes ready to expand were enclosed in a large bag made of net, and they did not seem in the least injured by this treatment. Only three of them produced any pods, each a single one; and these three pods contained one, four, and five seeds. So that only a single pod from the seven racemes included a fair complement of seeds.

Cuphea purpurea (Lythraceae).—Produced no seeds. Other flowers on the same plant artificially fertilised under the net yielded seeds.

Vinca major (Apocynaceae).—Is generally quite sterile, but sometimes sets seeds when artificially cross-fertilised: see my notice 'Gardeners' Chronicle' 1861 page 552.

V. rosea.—Behaves in the same manner as the last species: 'Gardeners' Chronicle' 1861 page 699, 736, 831.

Tabernaemontana echinata (Apocynaceae).—Quite sterile.

Petunia violacea (Solanaceae).—Quite sterile, as far as I have observed.

Solanum tuberosum (Solanaceae).—Tinzmann says ('Gardeners' Chronicle' 1846 page 183) that some varieties are quite sterile unless fertilised by pollen from another variety."]