The Abietineæ, the Pine and Fir Tribe, 206—the Genus Pinus, 209—the Genus Abies, the Spruce Fir, 212—the Genus Picea, the Silver Fir, 214—the Genus Larix, the Larch, 216—the Genus Cedrus, the Cedar, 217—the Genus Araucaria, 219—§ II. Cupressineæ, the Cypress Tribe, 220—the Genus Callitris, 222—the Genus Cupressus, the Cypress, 223—the Genus Taxodium, the Deciduous Cypress, 224—the Genus Juniperus, the Juniper, 225—§ III. Taxineæ, the Yew Tribe, 228—the Genus Taxus, the Yew, ib.—the Order Cycadæ, 229.

PART II.