. Plant studies; an elementary botany. Botany. 32i PLANT STUDIES At the bottom of the coiisi)ieiioiis notch in the pi'othal- linni is the growing i^oint, representing tlie upex of the phmt. This notch is always a conspicnons feature. Tlie and archegonia are usually developed on the under surface of tlie prothallium (Kig. 303, A), and dif- fer from those of all Bryo})hytes, except the Anflioreros forms, in Ijcing sunk in the tissue of the prothallium and opening on the sui-face, more or less of the neck of the archegonium pi'oji'cting (Fig. '.'04:). The eggs are not dif- ferent fro
. Plant studies; an elementary botany. Botany. 32i PLANT STUDIES At the bottom of the coiisi)ieiioiis notch in the pi'othal- linni is the growing i^oint, representing tlie upex of the phmt. This notch is always a conspicnons feature. Tlie and archegonia are usually developed on the under surface of tlie prothallium (Kig. 303, A), and dif- fer from those of all Bryo})hytes, except the Anflioreros forms, in Ijcing sunk in the tissue of the prothallium and opening on the sui-face, more or less of the neck of the archegonium pi'oji'cting (Fig. '.'04:). The eggs are not dif- ferent from those formed within the archegonia of 15i'3'0-. Fi.;, 2;,. AiitlM'.-Hliuiii nf /â /.,)., iZJi, «all rrlls (âi, nprnin^- f,,r PSPII],,. of â¢^l"'l'l" ""'llHT rclls I, 1, .â sc;i|i,>a lIHilhcr itIIs In. S|,rn,is frrc from ulotlliT rclls I/O, .shoMiiii,'f^piral ;oi<l iiiulticiliatu chiirarliT. âCALinvni,!,. phytes, hut the sperms arc very dilTcreut. The I'.ryoiiliyte sperm has a small l)ody and two long cilia,, while the I'teri- dophyte sperm has a long s]) coiled , l)lunt behind and ta])criug to m. jiiiint in front, wher numerous cilia, are dcvclc|)cil (^iil.^). It is, tlicrcforc, a huge, s])irally ceiled, muUiciliate s])crni, and is (piitc charal,h:i,llia, arc developing the aidheriilia liegin. 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 Coulter, John Merle, 1851-1928. New York, D. Appleton and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1900
