. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 336.—P. solitaria. 1-month-old colony on apple agar. After Scott and Rorer. The fimgus was grown in pure culture and its identity on twig, leaf and fruit was shown by cross inoculation. P. persicae Sacc. is common on peach leaves. P. piricola Sacc. & Speg. is foimd on apple and pear. P. limitata Pk.'" is reported as the cause of an apple leaf spot. Spots round minute, 2-6 mm., brown or reddish; pycnidia epiph- yllous, black, few, punctiform; spores ellipsoid, 7-8 x 4 jn. P. mail P. & D. occurs on apple and pear. P
. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 336.—P. solitaria. 1-month-old colony on apple agar. After Scott and Rorer. The fimgus was grown in pure culture and its identity on twig, leaf and fruit was shown by cross inoculation. P. persicae Sacc. is common on peach leaves. P. piricola Sacc. & Speg. is foimd on apple and pear. P. limitata Pk.'" is reported as the cause of an apple leaf spot. Spots round minute, 2-6 mm., brown or reddish; pycnidia epiph- yllous, black, few, punctiform; spores ellipsoid, 7-8 x 4 jn. P. mail P. & D. occurs on apple and pear. P. pirina ; Spots variable; pycnidia epiphyllous, punctiform, lenticular, 100-130 M, context loosely cellular, brown; conidia ovoid to ellipsoid, 4-5 x /i. This was long regarded as the chief factor causing the common leaf spot on the apple and pear. Recent work throws doubt on 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 Stevens, Frank Lincoln, 1871-1934. New York : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1913
