Every object assumes a more majestic and picturesque character; the soil, watered by springs, is furrowed in every direction; trees of gigantic height, covered with lianas, rise from the ravines; their bark, black and burnt by the double action of the light and the oxygen of the atmosphere, contrasts with the fresh verdure of the pothos and dracontium, the tough and shining leaves of which are sometimes several feet long.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1] Reference

And as we now learnt that over the vast plain before us for seventy miles in that arid region no water could be found but such as was brackish and fetid, and no kind of food but southernwood, wormwood, dracontium, and other bitter herbs, we filled the vessels which we had with sweet water, and having slain the camels and the rest of the beasts of burden, we thus sought to insure some kind of supplies, though not very wholesome.    From Wordnik.com.  [The Roman History of Ammianus Marcellinus During the Reigns of the Emperors Constantius, Julian, Jovianus, Valentinian, and Valens] Reference

Green dragon (Arisoema dracontium).    From Wordnik.com.  [Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86] Reference

Dragon, Green Dragon Arum Arisaema dracontium 177.    From Wordnik.com.  [The Field Guide to Wildlife Habitats of the Eastern United States] Reference