...Consequently, in accordance with his simple rule, he classes them as distinct species; as he does sweet and bitter almonds, the peach and nectarine, &c... 
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Another hybrid from a sweet almond by the pollen of a nectarine produced during the first three years imperfect blossoms, but afterwards perfect flowers with an abundance of pollen...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Most of the varieties both of the peach and nectarine reproduce themselves truly by seed...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...De Candolle does not appear perfectly assured of their specific identity; and an eminent botanist has quite recently maintained that the nectarine "probably constitutes a distinct species...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...It is asserted that the Boston nectarine was produced from a peach-stone, and this nectarine reproduced itself by seed...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Rivers states that from stones of three distinct varieties of the peach he raised three varieties of nectarine; and in one of these cases no nectarine grew near the parent peach-tree...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Rivers raised a nectarine from a peach, and in the succeeding generation another nectarine from this nectarine...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Peter Collinson in 1741 recorded the first case of a peach-tree producing a nectarine, and in 1766 he added two other instances...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...One of the peaches was almost as smooth on one side as a nectarine...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...A writer in the 'Gardener's Chronicle' says that a peach-tree planted fifteen years previously produced this year a nectarine between two peaches; a nectarine-tree grew close by...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...In 1844 a Vanguard peach-tree produced, in the midst of its ordinary fruit, a single red Roman nectarine...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
... First, that the parent-trees have been in every case hybrids between the peach and nectarine, and have reverted by bud-variation or by seed to one of their pure parent-forms...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...The Carclew nectarine, on the other hand, first produced half-and-half fruit, and subsequently pure peaches...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...The varieties of the peach and nectarine run in parallel lines...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...The varieties of the peach have largely increased in number since the Christian era, when from two to five varieties alone were known; and the nectarine was unknown...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...The seed of the nectarine, on the other hand, occasionally produces peaches; and we have seen in one instance that a nectarine-tree yielded peaches by bud-variation...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...The Boston nectarine, which appeared as a bud-variation, produced by seed a closely allied nectarine...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
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