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