. The British rust fungi (Uredinales) their biology and classification. Rust fungi. Fig. 167. P. Lychnidearum. Teleutospores, on Lychnis Fig. 168. P. Lychnidearum. Teleutospores, on Arenaria trinervis. rounded or somewhat pointed above and more or less thickened (up to 10 /i), gently constricted, rounded or attenuated below, smooth, yellowish-brown, 30—50 x 10—20 fi; pedicels hyaline, persistent, 60—85 /t long. On various CaryophyllaceEe, such as Dianthus barbatus, Lychnis diurna, L. vespertina, Arenaria trinervis, Gypsophila elegans, Sagina nodosa{'?), Spergula arvensis(1), Stellaria
. The British rust fungi (Uredinales) their biology and classification. Rust fungi. Fig. 167. P. Lychnidearum. Teleutospores, on Lychnis Fig. 168. P. Lychnidearum. Teleutospores, on Arenaria trinervis. rounded or somewhat pointed above and more or less thickened (up to 10 /i), gently constricted, rounded or attenuated below, smooth, yellowish-brown, 30—50 x 10—20 fi; pedicels hyaline, persistent, 60—85 /t long. On various CaryophyllaceEe, such as Dianthus barbatus, Lychnis diurna, L. vespertina, Arenaria trinervis, Gypsophila elegans, Sagina nodosa{'?), Spergula arvensis(1), Stellaria Holo- stea, S. media, S. uliginosa. May—November. It is most common on Lychnis diurna, on which as also on Dianthus the sori are remarkably circinate. (Figs. 167, 168.) The two species, P. Lychnidearum and P. Arenariae, are united in Sydows' Monograpliia, on the ground that our present knowledge, derived from cultures, is insufficient to separate them, and that any apparent morphological distinctions break down completely when a long series of. 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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