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Darwin Correspondence Project

To Asa Gray   23 January 1877

Down, | Beckenham, Kent. | Railway Station | Orpington. S.E.R.

Jan 23. 77

My dear Gray,

Thanks for the card about Pontederia, & I have written to Mr Leggett.1 I am going to trouble you once again but I honestly believe for the last time. In a letter dated Nov 21, 1870 you say that Phlox subulata presents two forms which have been named as species & which you are inclined to think is a case of di or tri morphism: you speak of this as a common species, & if so could you send me two or three dried flowers of the different forms that I might compare their pollen grains & stigmas.2 In the same letter you mention Gilia aggregata (pulcella) with the stamens & pistils varying much in length; I suppose this is a rare plant; but if not so, I should much like to examine the two forms.—3

Forgive me & believe me | Yours very sincerely | Ch. Darwin


Thanks AG for card about Pontederia.

Asks for specimens of Phlox subulata and Gilia aggregata to check for dimorphism.

Letter details

Letter no.
Charles Robert Darwin
Asa Gray
Sent from
Source of text
Gray Herbarium of Harvard University (120)
Physical description

Please cite as

Darwin Correspondence Project, “Letter no. 10811,” accessed on 18 January 2020,