. The fungi which cause plant disease . Plant diseases; Fungi. THE 'FUNGI WHICH CAUSE PLANT DISEASE 521 one in the center of each spot, but slightly prominent; conidia cylindric or clavate-cylindric, 10-25 x n. On watermelon leaves. S. cucurbitacearum Sacc. is also on cucurbits. " S. cannabina Pk. is on hemp producing leaf spots. S, nicotianse Pat. is reported from France as the cause of tobacco leaf ;" S. doUchi B. & C. Spots white, with a broad, light brown margin; conidia straight, subfusiform, 3-septate, 40 m- On ;^ S. medicaginis Rob. & D
. The fungi which cause plant disease . Plant diseases; Fungi. THE 'FUNGI WHICH CAUSE PLANT DISEASE 521 one in the center of each spot, but slightly prominent; conidia cylindric or clavate-cylindric, 10-25 x n. On watermelon leaves. S. cucurbitacearum Sacc. is also on cucurbits. " S. cannabina Pk. is on hemp producing leaf spots. S, nicotianse Pat. is reported from France as the cause of tobacco leaf ;" S. doUchi B. & C. Spots white, with a broad, light brown margin; conidia straight, subfusiform, 3-septate, 40 m- On ;^ S. medicaginis Rob. & Desm. is on alfalfa. Spots whitish, angulate-subcircular, confluent; pycnidia len- ticular, 70-90 ix; conidia slender, vermiform, tortuous, 60-70 x 1 m, septate. S. petroselini Desm. Spots brown, in age white, amphigenous; pycnidia epiphyllous, minute, olivaceous, promi- nent; conidia filiform, straight or curved, 35-40 x 1-2 On parsley. S. petroselini apii Br. & CaV.^^* 122-126 This common and very de- structive fungus on celery leaves was first described in Italy by Cavara and in America it was early noted by Chester 1^2 and Halsted.^^ The pycnidia are abundant in â âââ â ,....â.,. Fig. 360.âS. petroselini apu. Pycmdium the leaf spots and in the case showing spores oozing through the ostiole. of stored celery they are ^^^'^^'^''â foimd scattered over the blanched petioles. Essentially it is only a host variety. S. lycopersici ;^* ^^' ^^ Spots large, often confluent and covering the entire leaf, sordid cinereous, subindeterminate; pycnidia scattered, hypophyllous, lenticular-hemispheric, prominent, membranous; conidia elongate, cylindric, 70-110 x 11, 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
