Is collecting facts on variation; questions AG on the alpine flora of the U. S.
Sends a list of plants from AG’s Manual of botany [1848] and asks him to append the ranges of the species.
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Is collecting facts on variation; questions AG on the alpine flora of the U. S.
Sends a list of plants from AG’s Manual of botany [1848] and asks him to append the ranges of the species.
Has filled up CD’s paper [see 1674].
Distribution and relationships of alpine flora in U. S.
Suggests AG append ranges to the species in the new edition of his Manual.
Is interested in comparing the flora of U. S. with that of Britain and wishes to know the proportions to the whole of the great leading families and the numbers of species within genera. Would welcome information on which species AG considers to be "close" in the U. S.
Sends a list of "close" species from his Manual of botany.
Hopes Hooker or CD will write an essay on species. Discusses some of the difficulties of defining botanical species.
Geographical distribution. "Close" species. Hopes AG will write an essay on species.
"Close" species in large and small genera.
Alphonse de Candolle on geographical distribution [Géographie botanique raisonnée (1855)].
Species variability.