Critical remarks on North American plants, consisting of corrections and additions to a manuscript Cadwallader Colden had sent to Jan Frederik Gronovius, who in turn had sent it to Carl Linnaeus (LM/MA/CAT/XX). Gronovius published that manuscript in "Acta Soc. Ups." 1740-1753.
Included in the letter from Cadwallader Colden to Carl Linnaeus, 20 February 1749 n.s., "The Linnaean correspondence", linnaeus.c18.net, letter L1015.