. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 153 B. polymorpha (Oed.) Wett.*-' *' is a common saprophyte on bark. It is said to sometimes become parasitic. Ascocarps black, stipitate; disk scarcely cupped, ranging up to 4 cm. in diameter although usually smaller. Caliciaceae (p. 134) Stroma more or less thalloid, with or without algal cells, often rudimentary and inconspicuous; ascoma more or less globoid, stipitate; the apex of the ascus dissolv- ing before the spores are matured, thus allowing the hyaline unripened spores to es- cape and
. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 153 B. polymorpha (Oed.) Wett.*-' *' is a common saprophyte on bark. It is said to sometimes become parasitic. Ascocarps black, stipitate; disk scarcely cupped, ranging up to 4 cm. in diameter although usually smaller. Caliciaceae (p. 134) Stroma more or less thalloid, with or without algal cells, often rudimentary and inconspicuous; ascoma more or less globoid, stipitate; the apex of the ascus dissolv- ing before the spores are matured, thus allowing the hyaline unripened spores to es- cape and mature afterwards. This small family (less than one him- dred twenty-five species) contains the only lichens of phytopathological importance, un- less the foliose lichens which sometimes ap- F'o- 109.—C. . , on Grape pear on poorly kept fruit trees be consid- 2, Ascua. 1 Maaaee. pallida Root. After Key to the Genera of Caliciacese Ascoma with a long stalk Spores spherical, or subspherical Spores colorless or only slightly colored. 1. Coniocybe, p. 153. Spores brown or brownish 2. Chsenotheca. Spores elongated, septate Spores elongate elliptic or egg-shaped, usually two-celled 3. Calicium. Spores elliptic to spindle-form, 4 to &-celled 4. Stenocybe. Ascoma short stalked Spores 2-celled 5. Acolium. Spores globose, 1-celled 6. Sphinetrina. Coniocybe pallida (Pers.) Fr. is generally distributed through- out Europe and America, commonly on the bark of various forest trees and upon the crown and roots of the grape. The parasitic. 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
