Sentence Examples with the word Intercross

There are about twenty species, but the number cannot be very accurately defined - several, usually regarded as distinct, being probably merely variable forms of the same type, and the ease with which the trees intercross has led to the appearance of many hybrids.

As these varieties intercross with each 1 See drawings made to scale by Mr Worthington Smith in the Gardener's Chronicle (25th December 1886).