. The fungi which cause plant disease . Plant diseases; Fungi. 342 THE FUNGI WHICH CAUSE PLANT DISEASE Wall slightly colored 16. Cionothriz. Telia with a peridium Telia half projecting above the host surface. .• 17. Dietelia. Telia sunken in the tissue of the host 18. EndophyUum, p. 353. Teliospores 2-celled Peridium present 19. Pucciniosita. Peridium none 20. Didymopsora. Melampsora Castaigne (p. 340) 0. Pycnia half spherical. 1. .^cia of caeoma-type, no peridium or paraphyses. II. Urediniospores solitary, membrane colorless. III. Teliospores 1-celled, rarely more, in flat irregularly limited
. The fungi which cause plant disease . Plant diseases; Fungi. 342 THE FUNGI WHICH CAUSE PLANT DISEASE Wall slightly colored 16. Cionothriz. Telia with a peridium Telia half projecting above the host surface. .• 17. Dietelia. Telia sunken in the tissue of the host 18. EndophyUum, p. 353. Teliospores 2-celled Peridium present 19. Pucciniosita. Peridium none 20. Didymopsora. Melampsora Castaigne (p. 340) 0. Pycnia half spherical. 1. .^cia of caeoma-type, no peridium or paraphyses. II. Urediniospores solitary, membrane colorless. III. Teliospores 1-celled, rarely more, in flat irregularly limited crusts. Basidiospores spherical. The question of biologic speciali- zation is especially complicated in this genus. The uredinial and telial stages occur in abimdance on wil- lows and poplars, the aecial stage on a wide range of plants embracing gymnosperms, monocotyledons and dicotyledons. M. lini D. C. O. Pycnia amphigenous, numer- ous, scattered, inconspicuous, sub- epidermal, pale-yellow, flattened globoid or lens-shaped, 100-175 ^i in diameter, 65-95 ju high; spores Fia. 252.—^Pucciniastrum goepper- ,,. , o n l q_i tianum, showing germinating ellipsoiu, ^—o oy o—4 fl. teUospores. After Hartig. j j^^^ ^^^Qy hypophyllous, nu- merous, scattered, rounded, mm. across, bright orange- yellow, conspicuous, formed between epidermis and mesophyll, soon naked, ruptured epidermis evident; spores globoid, 19-27 x 21-28 fi.; wall colorless, thin, about 1 n, finely and evenly verru- cose, with distinct papillse, pores not 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
