"Dianthus" Quotes from Famous Books
 ... genus Nicotiana have been crossed, and freely produce hybrids; but one species, N. acuminata, not particularly distinct from the others, could neither fertilise, nor be fertilised by, any of the eight other species experimented on. Among genera we find some—such as Hippeastrum, Crinum, Calceolaria, Dianthus—almost all the species of which will fertilise other species and produce hybrid offspring; while other allied genera, as Zephyranthes and Silene, notwithstanding the most persevering efforts, have not produced a single hybrid even between the most ...
— Darwinism (1889) • Alfred Russel Wallace |
