Norway spruce (Pinus Abies) illustration. Digitally enhanced from our own book, Medical Botany (1836) by John Stephenson and… https://www.rawpixel.com/image/327139/free-illustration-image-christmas-tree-vintageFree Image from public domain license1. Pond pine (Pinus serotina) 2. Loblolly pine (Pinus taeda) 3. Black pine (Pinus Australis) from Traité des Arbres… https://www.rawpixel.com/image/569012/stone-pine-conifer-coneFree Image from public domain license