Leaf. A leaf is an organ of a vascular plant, as defined in botanical terms, and in particular in plant morphology. Foliage is a mass noun that refers to leaves as a feature of plants.eaf (noun). something which is like a leaf in being wide and thin and having a flat surface, or in being attached to a larger body by one edge or end; as : (a) A part of a book or folded sheet containing two pages upon its opposite sides.
Production on Vikings season 4 is set to begin this spring in Ireland (presumably for an early 2016 premiere), while its third season will wrap up in about a month, on April 23rd.
Written by History Channel Vikings will return for 10-episode second season next year. Production is set to begin this summer. The show's first-season finale will air tonight (April 28).The renewal comes five episodes into what has been a successful run for the series.eanwhile in Kattegat, with a plague taking its toll on the village, the people look to Lagertha to help appease the gods. The Season Finale, Episode 9: All Change airs tonight, Sunday, April 28 at 10 p.m. on The History Channel. Vikings follows the adventures of Ragnar Lothbrok the greatest hero of his age.