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Edgar Anderson on the origin of Iris versicolor and Iris x robusta

Edgar Anderson showed that The species Iris versicolor arose from crosses of Iris virginica and Iris setosa var. interior He also noted that Iris x robusta came from crosses with virginica and versicolor.

* Reference: Anderson, E. S, (1928), The Problem of Species in the Northern Blue Flags, Iris versicolor L. and Iris virginica L. Annals of the Missouri Botanical Garden 15: 241-332.

Iris setosasetosa and Iris virginica = Iris versicolor

Anderson noted a second species cross creating Iris x robusta from virginica and versicolor crossed

Iris virginica and Iris versicolor = Iris x robusta

'Beetroot', 'Brighter Days', 'Cast Ashore',
'Dark Aura'. 'Gem Dandy', 'Gerald Darby',
'Indomitable', SpxJennyJoy 'Mountain Brook',
'Norris Lavender', 'Nutfield Blue', 'Park Spark' .

-- Main.RPries - 2011-03-07
Topic revision: r2 - 24 Oct 2022, BobPries
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