Asplenium Fontanum Small 320×208 Medium 640×417 Large 1024×667 Download Tiff Original 2400×1563 | (874.0 KB) Description The fronds of the asplenium fontanum fern are oblong and taper toward the base. The fronds are three to six inches long. Keywords asplenium fontanum, fern Galleries Ferns Source: Nicholson, George The Illustrated Dictionary of Gardening, Div. VI (London, England: L. Upcott Gill, 1884)