. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 559 '' / / / Fig. 376.—P. funerea. A. Spores. B. A j'oung mycelium. C. Hypha of an older mycelium. After Reed. P. funerea Desm. Acervuli scattered, punctiform, blackish, subepidermal, erum- pent; stroma depressed, white; conidia oblong, fusoid, 5-celled, constricted at the septa, the three central cells fuscous, the others t j ^ \\ a, hyaline, 22-32 x 6-8 m, with 2-5 "2 W/T recurved hyaline spines, 10-15 x n; conidiophores short, 5-9 x M- It is found on various conifers causing d
. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 559 '' / / / Fig. 376.—P. funerea. A. Spores. B. A j'oung mycelium. C. Hypha of an older mycelium. After Reed. P. funerea Desm. Acervuli scattered, punctiform, blackish, subepidermal, erum- pent; stroma depressed, white; conidia oblong, fusoid, 5-celled, constricted at the septa, the three central cells fuscous, the others t j ^ \\ a, hyaline, 22-32 x 6-8 m, with 2-5 "2 W/T recurved hyaline spines, 10-15 x n; conidiophores short, 5-9 x M- It is found on various conifers causing disease and is a common saprophyte. In America it causes a stem spot or anthracnose of ginseng,*^ girdling the petioles. The culture characters were studied by Reed.'** P. guepini Desm. var. vaccinii Sh.^'' Acervuli minute, punctiform, convex, black, subepidermal, erumpent; conidia el- liptic and somewhat imequilateral, about 20 n long; central cells dark, the two end cells hyaline, the apical cell with 3-4 filiform setae 22-35 n long, the basal with a short hyaline appendage, 6-12 j«. Common on fallen leaves of cranberries, and associated with rot of the berries. It is common on tea causing a serious dis- ease, also on Camellia, Magnolia, Citrus, Rhododendron. P. uvicola Speg.^** Acervuli globose, lenticular, black, subepidermal, Fic. 377.—Pestalozzia guepini vaccinii; a, a conidium having an apical appendage with three branches; 6, a conidium having an apical appendage with four branches; c, a germinating conidium; d, a ger- minating conidium sending out two germ tubes. After 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
