Brassica oleracea (Cruciferae).—­Produces many capsules, but these generally not so rich in seed as those on uncovered plants.

Raphanus sativus (Cruciferae).—­Half of a large branching plant was covered by a net, and was as thickly covered with capsules as the other and unprotected half; but twenty of the capsules on the latter contained on an average 3.5 seeds, whilst twenty of the protected capsules contained only 1.85 seeds, that is, only a little more than half the number.  This plant might perhaps have been more properly included in the former list.

Iberis umbellata (Cruciferae).—­Highly fertile.

Iberis amara.—­Highly fertile.

Reseda odorata and lutea (Resedaceae).—­Certain individuals completely self-fertile.

Euryale ferox (Nymphaeaceae).—­Professor Caspary informs me that this plant is highly self-fertile when insects are excluded.  He remarks in the paper before referred to, that his plants (as well as those of the Victoria regia) produce only one flower at a time; and that as this species is an annual, and was introduced in 1809, it must have been self-fertilised for the last fifty-six generations; but Dr. Hooker assures me that to his knowledge it has been repeatedly introduced, and that at Kew the same plant both of the Euryale and of the Victoria produce several flowers at the same time.

Nymphaea (Nymphaeaceae).—­Some species, as I am informed by Professor Caspary, are quite self-fertile when insects are excluded.

Adonis aestivalis (Ranunculaceae).—­Produces, according to Professor H. Hoffmann (’Speciesfrage’ page 11), plenty of seeds when protected from insects.

Ranunculus acris (Ranunculaceae).—­Produces plenty of seeds under a net.

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

Papaver vagum.—­Produced late in the summer plenty of seeds, which germinated well.

Papaver argemonoides.—­According to Hildebrand (’Jahrbuch fur w.  Bot.’  B.7 page 466), spontaneously self-fertilised flowers are by no means sterile.

Glaucium luteum (Papaveraceae).—­According to Hildebrand (’Jahrbuch fur w.  Bot.’  B.7 page 466), spontaneously self-fertilised flowers are by no means sterile.

Argemone ochroleuca (Papaveraceae).—­According to Hildebrand (’Jahrbuch fur w.  Bot.’  B.7 page 466), spontaneously self-fertilised flowers are by no means sterile.

Adlumia cirrhosa (Fumariaceae).—­Sets an abundance of capsules.

Hypecoum procumbens (Fumariaceae).—­Hildebrand says (idem), with respect to protected flowers, that “eine gute Fruchtbildung eintrete.”