List of close species taken from AG's Manual of botany .
– [Gives a list of 146 genera taken from A. Gray 1856, indicating those species in each genus that could be considered closely related. CD has added to the manuscript the number of close species in each genus.]
Of course I suppose most of the above are truly & originally distinct; some are probably not; a few pretty surely not.
- f1 2249.f1Dated by the relationship to the following letter. CD evidently received this list from Asa Gray on 3 April 1858, although annotations on the letter give only ‘April 1858’ (see CD annotations). It is not possible to determine when Gray composed the list. CD had asked him to do so late in 1857 (Correspondence vol. 6, letter to Asa Gray, 29 November ).
- f2 2249.f2In November 1857, CD had asked Gray to think about close species (see n. 1, above) with reference to a list Gray had drawn up for CD in 1855 (see Correspondence vol. 5, letter to Asa Gray, 8 June , and letter from Asa Gray, 30 June 1855). The first list (now in DAR 165: 92/3) was compiled from A. Gray 1848. The new list was taken from the second edition of this work (A. Gray 1856).
- f3 2249.f3Apparently there was also a covering note sent by Gray with this list, which is now lost. CD sent the note on to Joseph Dalton Hooker (see letter to J. D. Hooker, 10 April ).
- f4 2249.f4CD's annotation refers to the instructions he usually gave to Ebenezer Norman, who tabulated the catalogues and lists for CD. CD's calculations on tables made from this list of close species are in DAR 16.2: 294–9.