officinalis, growing at the
distance of above two kilometres, or of about one English mile and a
quarter. (10/14. 'Revue des Sc. Nat.' 1875 page 331.)
All those who have long attended to hybridisation, insist in the
strongest terms on the liability of castrated flowers to be fertilised
by pollen brought from distant plants of the same species. (10/15. See,
for instance, the remarks by Herbert 'Amaryllidaceae' 1837 page 349.
Also Gartner's strong expressions on this subject in his
'Bastarderzeugung' 1849 page 670 and 'Kenntniss der Befruchtung' 1844
pages 510, 573. Also Lecoq 'De la Fecondation' etc. 1845 page 27. Some
statements have been published during late years of the extraordinary
tendency of hybrid plants to revert to their parent forms; but as it is
not said how the flowers were protected from insects, it may be
suspected that they were often fertilised with pollen brought from a
distance from the parent-species.) The following case shows this in the
clearest manner: Gartner, before he had gained much experience,
castrated and fertilised 520 flowers on various species with pollen of
other genera or other species, but left them unprotected; for, as he
says, he thought it a laughable idea that pollen should be brought from
flowers of the same species, none of which grew nearer than between 500
and 600 yards. (10/16. 'Kenntniss der Befruchtung' pages 539, 550, 575,
576.
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