Following receipt of letter from their mutual friend [Charles] Lyell concerned to hear that [John] Mackay [(1772-1802), nurseryman and gardener] has been credited in "English botany" as sending the 'Saxifraga pedatifida', which he claims is impossible as it is very rare and only found in the Clova mountains; offers to send plants botanists are not well acquainted with so as to be cultivated in gardens.
Encloses specimens of 3 varities of 'S. pedatifida'; an 'Arenaria' he proposes naming 'A. charlinfolia', observations. Points out that Smith has credited [Robert] Brown with finding 'Sagina maritima' in 1798 on coasts of Ireland and Fifeshire, when he himself found it in 1784 on Ben Nevis.
Asks Goodenough to forward this letter to Dr [James Edward] Smith.