Germinating Spore of the Common Polypody Small 166×320 Medium 331×640 Large 530×1024 Download Tiff Original 1243×2400 | (239.6 KB) Description An illustration of a germinating spore of the common polypody: sp, exospore; k, first root-hair. Keywords biology, Botany, fern, germinate, germinating, spore Galleries Ferns Source: Benson John Lossing, ed. The New Popular Educator (London, England: Cassell & Company Limited, 1891) Courtesy the private collection of Roy Winkelman
