Cytisus alpino-laburnum, ovules and pollen of. -origin of.

Cytisus alpinus.

Cytisus laburnum.

Cytisus purpureo-elongatus, ovules and pollen of. -production of.

Cytisus purpureus.

DAHLBOHM, effects of food on hymenoptera.

DAHLIA. -bud-variation by tubers in the. -improvement of, by selection. -steps in cultivation of. -effect of conditions of life on. -correlation of form and colour in.

DAISY, hen-and-chicken.
-Swan River.

DALBRET, varieties of wheat.

DALIBERT, changes in the odours of plants.