. The British rust fungi (Uredinales), their biology and classification. Uredineae. The presence of the inyceHuni causes the stems to stand more upright; the internodes are considerably lengthened, and the leaves fewer, so that the affected plants can be readily distinguished, as in /-'. Betonicae. The mycelium appears to be perennial, and the sori to be confined almost entirely to the stems, where they cause a slight thickening and are more frequent at the nodes than elsewhere. Distribution : Central and North-western Europe. Fig. 122. P. caullncola. Telentospores and mesospore. 45. Puccinia
. The British rust fungi (Uredinales), their biology and classification. Uredineae. The presence of the inyceHuni causes the stems to stand more upright; the internodes are considerably lengthened, and the leaves fewer, so that the affected plants can be readily distinguished, as in /-'. Betonicae. The mycelium appears to be perennial, and the sori to be confined almost entirely to the stems, where they cause a slight thickening and are more frequent at the nodes than elsewhere. Distribution : Central and North-western Europe. Fig. 122. P. caullncola. Telentospores and mesospore. 45. Puccinia Glechomatis DC. F. Glechomatis i)C. Eucycl. viii. 245. Cooke, Handb. p. 496 ; Micr. Fung. p. 204, pi. 4, f. 73—4. Plowr. Ured. p. 214. Sacc. Syll. vii. 688. Sydow, Monogr. i. 277. Fischer, Ured. Schweiz, p. 327, f. 239. Teleutospores. Sori h^^pophyllous or on the petioles, on brownish spots or sometimes none, ^—1 mm. diam., roundish, solitary and scattered, or more often subcon- fluent into rounded clusters as much as 4 mm. diam., on the stem and petioles often elongated, pulvinate, at first yellowish, then chestnut, and at last blackish; spores ellipsoid or oblong, with an acute or rounded horn-like process (8^12yti high) which is often obliquely placed and falls off on germination, faintly constricted, rounded below, smooth, pale and clear-brown, 30—48 X 15—24 /jl ; pedicels hyaline, persistent, as much as 75/A long; an occasional mesospore is Fig. 123. P. Gledioinatis. Teleutospores and 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, William Bywater. Cambridge, Univ. Press
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