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Letter 12556

Gray, Asa to Darwin, C. R.

[1 Apr 1880]

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    Germination and root of Ipomoea.



Ipomœa leptophylla makes a root as big as a man. So does Ipomœa pandurata,—which, I believe—but dont know—germinates normally, That must be looked to. If it has the same trick it would well confirm your notion of the meaning of the thing.

A Gray

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