The Origin of Species · Character

Kölreuter

A botanist known for early experiments on plant hybridization.

minor

Also known as Kolreuter

First appearance: I: Variation Under Domestication

Kölreuter shows up with force in I: Variation Under Domestication. The page is where that presence becomes real.

Mentioned in the context of the reproductive system's sensitivity to changed conditions and variability.

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In I: Variation Under Domestication: Mentioned in the context of the reproductive system's sensitivity to changed conditions and variability. Later, in Causes of Variability: Mentioned for his observation of similarity…

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Character Web

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Character groups

Hybridization experimenters
Protagonist
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Narrative arc

Story tension across the book — this chapter sits in Exposition.

Setup
Escalation
Breaking point
Aftermath
Closing

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Kölreuter appears across 9 companion beats. Open any chapter in the free preview to see the notes beside the text.

I: Variation Under Domestication
Mentioned in the context of the reproductive system's sensitivity to changed conditions and variability.
Causes of Variability
Mentioned for his observation of similarity between variability from crossing species and that from new conditions.
On the Intercrossing of Individuals
Mentioned for his work on the barberry and on cross-fertilization.
IX: Hybridism
Cited as a conscientious observer who made the rule of sterility universal, but ranked fertile forms as varieties.
Degrees of Sterility
Cited as a conscientious observer who made the rule of sterility universal, but cut the knot by ranking fertile crosses as varieties.
Origin and Causes of the Sterility of First Crosses and of Hybrids
Cited alongside Gärtner for evidence of a series from reduced seed production to complete sterility.
Fertility of Varieties When Crossed, and of Their Mongrel Offspring, Not Universal
Demonstrated that one tobacco variety produced less sterile hybrids when crossed with a distinct species.
Hybrids and Mongrels Compared, Independently of Their Fertility
Kölreuter's experiments are cited as opposing Gärtner's conclusion about hybrid differences when crossed with a third species.
Rudimentary, Atrophied, and Aborted Organs
Referenced for his crossing experiment showing that a rudimentary pistil in male flowers can be increased in size when hybridized with an hermaphrodite species.

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See Kölreuter in I: Variation Under Domestication