. A handbook of cryptogamic botany. Cryptogams. 7° VASCULAR CRYPTOGAMS the substitutionary growths which accompany the arrest of spore-forma-' tion are restricted to the sporanges themselves. These are replaced by ' pseudo-bulbils ' of a pear-like form, presenting but little resemblance to ordinary prothallia, but demonstrating their oophytic character by pro- ducing antherids. In other examples the prothalloid growths are by no means restricted to the sporange ; they may either arise from the sorus itself, or may appear at points quite distinct from the sori, and even on fronds which bear no
. A handbook of cryptogamic botany. Cryptogams. 7° VASCULAR CRYPTOGAMS the substitutionary growths which accompany the arrest of spore-forma-' tion are restricted to the sporanges themselves. These are replaced by ' pseudo-bulbils ' of a pear-like form, presenting but little resemblance to ordinary prothallia, but demonstrating their oophytic character by pro- ducing antherids. In other examples the prothalloid growths are by no means restricted to the sporange ; they may either arise from the sorus itself, or may appear at points quite distinct from the sori, and even on fronds which bear no sori at all. There is here a distinct transition from. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bennett, Alfred W. (Alfred William), 1833-1902; Murray, George Robert Milne, 1858-. London, New York, Longmans, Green, and Co.
Size: 1333px × 1875px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondonnewyorklongm
