Origin of Species Variorum

→ by 1859 1860 1861 1866

for instance, by 1869 1872

→ insects. 1859 1860 1861 1866

insects; but their visits do not in any way benefit the plant. 1869 1872

→ Let us now suppose a little sweet 1859 1860 1861 1866

Now, let us suppose that the 1869 1872

→ to be excreted by the inner bases 1859 1860 1861 1866

was excreted from the inside 1869 1872

→ flower. 1859 1860 1861 1866

certain number of plants of any species. 1869 1872

→ In this case 1859 1860 1861 1866

OMIT 1869 1872

→ the stigma of another flower. 1859 1860 1861 1866

another. 1869 1872

→ we have good reason to believe (as will hereafter be more fully alluded to), would produce very 1859 1860 1861 1866

as we have good rea- son to believe, would produce 1869

as can be fully proved, gives rise to 1872

↑ 1 blocks not present in 1859 1860 1861 1866; present in 1869 1872

The plants which produced flowers with the largest glands or nectaries, excreting most nectar, would oftenest be visited by insects, and would oftenest be crossed; and so in the long-run would gain the upper hand and form a local variety.

→ from flower to flower, 1859 1860 1861 1866

OMIT 1869 1872

→ a 1859 1860 1861 1866

to be a 1869 1872

→ and those 1859 1860 1861 1866

and the 1869

to be thus robbed; and the 1872

something injurious

from,

from

the

their

sap: this is

effected,

effected

→by glands at the base of the stipules in some Leguminosæ, and at the

backs

back

of the

leaves

leaf

of the common laurel. This juice, though small in quantity, is greedily sought by →insects. →Let us now suppose a little sweet juice or nectar →to be excreted by the inner bases of the

flowers

petals

of a →flower. →In this case

Insects

insects

in seeking the nectar would get dusted with pollen, and would

~~certainly~~

certainly

often transport

the pollen

from one flower to →the stigma of another flower. The flowers of two distinct individuals of the same species would thus get crossed; and the act of crossing, →we have good reason to believe (as will hereafter be more fully alluded to), would produce very vigorous seedlings, which consequently would have the best chance of flourishing and surviving. ↑ Some of these seedlings would

probably

almost certainly

inherit the nectar-excreting power. Those individual flowers which had the largest glands or nectaries, and which excreted most nectar, would be oftenest visited by insects, and would be oftenest crossed; and so in the long-run would gain the upper hand.

The

Those

flowers, also, which had their stamens and pistils placed, in relation to the size and habits of the particular

insects

insect

insects,

which visited them, so as to favour in any degree the transportal of

the

their

pollen,

pollen

→from flower to flower, would likewise be

favoured.

favoured

~~selected.~~

selected.

We might have taken the case of insects visiting flowers for the sake of collecting pollen instead of nectar; and as pollen is formed for the sole

purpose

object

of fertilisation, its destruction appears →a simple loss to the plant; yet if a little pollen were carried, at first occasionally and then habitually, by the pollen-devouring insects from flower to flower, and a cross thus effected, although nine-tenths of the pollen were destroyed, it might still be a great gain to the

plant

plant;

→and those individuals which produced more and more