. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 54 ENDOPHYLLUM SEMPBRVIV] spaces (sending haustoria into the cells) until it reaches the base of the leaf: thence it penetrates into the axis and so up to the growing point, where it hibernates till the following year. In the spring it grows on into the freshly formed leaves which become yellow and longer and more erect: on these, on b«»th sides, spermogones appear in March and April, followed by secidia (Fig. 32) which repeat the cycle. The affected plants are easily recognised by the differen
. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 54 ENDOPHYLLUM SEMPBRVIV] spaces (sending haustoria into the cells) until it reaches the base of the leaf: thence it penetrates into the axis and so up to the growing point, where it hibernates till the following year. In the spring it grows on into the freshly formed leaves which become yellow and longer and more erect: on these, on b«»th sides, spermogones appear in March and April, followed by secidia (Fig. 32) which repeat the cycle. The affected plants are easily recognised by the different attitude of the leaves, which imparts an unusual irregularity to the rosette (Fig. 33). The most interesting point about this species is that established by Hoff- mann, that the secidiospore-chain arises in the way already described for Puccinia Garicis from a cell produced by the fusion'of two adjacent cells of the spore- bed, after the manner described by Christman except that the conjugating cells were not situated in any definite plane. The binucleate secidiospores then became uninucleate by the fusion. Fig. 32. iEcidia of En- dophyllum on leaf of Si mpervivum monta- num (reduced).. 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 Grove, W. B. (William Bywater), 1848-1938. Cambridge, University Press
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishercambr, bookyear1913
