From:
Charles Robert Darwin
To:
Asa Gray
Date:
24 Aug [1855]
Source of text:
Archives of the Gray Herbarium, Harvard University (10)
Summary:
"Close" species in large and small genera.
Alphonse de Candolle on geographical distribution [Géographie botanique raisonnée (1855)].
Species variability.
Contributor:
Darwin Correspondence Project