Germination of Megarrhiza. AG's observations at variance with CD's.
Herbarium of Harvard University, Botanic Garden, Cambridge, Mass.
Feb. 3 1880.
My Dear Darwin
Your letter of the 19
If your plants were weak, even of the same species, it might account for their not lifting the weight of the seed.
About nomenclature, following the current nomenclature I called the hypocotyledons internode radicle—properly caudicle.
Please call all below it root, so as to avoid confusion, ``Perennial'' I should think so! The root is said to be sometimes of the size of a barrel. Those I have seen in California were from the size of a carrot to that of the biggest rata-baga.; the tip near the surface of the ground,—but under it, where there was no wash, In haste | Ever Yours | Asa Gray