[30]

Cassia pubescens circumnutation of young leaf

Cassia pubescens

Jun 10— 1º P.m
3º
10º 50' P.m. 10º
6º 40 a.m 11.th
8º. 15
1º
3º
6º
7º. 18' P.m
9º
10º. 35 P.m 11th (abnormal)
6º 50' a.m 12th
9.13
3º
4
5º
6º P.m 12th

[31v]

[page not in Darwin's hand]

23

634

Chap. 10

Papaver somniferum (Papaveraceæ). Thirty capsules from uncovered plants yielded 15.6 grains weight of seed, and 30 capsules from covered-up plants, growing in the same bed, yielded 16.5 grains weight; so that the latter plant were more productive than the uncovered. Prof. H. Hoffmann (Speciesfrage 1875. p. 53) also found this species self-fertile when protected from insects.

Papaver vagum (d:˚), produced late in the summer plenty of seeds which germinated well.

Papaver argemonoides (d˚)

Glaucium luteum (d˚)

Argemone ochrolenca (d˚)} According to Hildebrand (Jahr. Wissen. Bot. BVIII p. 466) sno conspicuous infertility is caused by spontaneously self-fertilisation  spontaneously self-fertilised flowers are by no means sterile.

Adlumia cirrhosa (Fumariaceæ) sets an abundance of capsules.

[Cross and self fertilisation, pp. 365-6.]

Hypecoum procumbens (d˚) Hildebrand says (2d dem) Jahr J. Botanik VII p. 464) "ein garten with respect to protected flowers, "Ein gute Fruchtbidung eintrette."

[Cross and self fertilisation, p. 331: "Fumariaceous genus, Hypecoum, Hildebrand observed that H. grandiflorum was highly self-sterile, whilst H. procumbens was fairly self-fertile. ('Jahrb. für wiss. Botanik' B. 7 page 464.)"]