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.