Incoming correspondence to George Engelmann from George Syme, for 1879. A copy of a correspondence sent to Joseph Hooker from George Syme. The correspondence relates to detailed discussion of classifications of Abies species, comparisons of Lowiana concolor of Southern Colorado and Sierras, grandis, Douglasii from Southern Colorado and Northern California. Engelmann's classification of Pinus ponderosa from Colorado, Oregon, and the Russian River in California, Benthamia, Jeffreyi compared with ponderosa. Pinus contorta raised from seed from Pacific coast compared with Dolanderi and Murrayanta, muricata and insignis, pugens of Wind River Mts. in Montana; Abies Engelmannia, memziesii on 49th parallel and Cascade Mts.

Folder contains original letter.