. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 277 globose, with a short, conical ostiole, walls black, carbonous to leathery; asci cylindric, 8-spored; spores elliptic, continuous, brown, imappendaged; paraphyses usually present. Over one hundred species, chiefly sapro- phytes. A. sullae Montem. occurs as the cause of a leaf spot on sulla.^** Fig. 206.—a. des- A. bohiensis (Hmp.) Speg. is on cacao; Z^g,I'^^ut^^S; A. destruens Sh. on cranberry; spores; 11, germi- Dating spore. After A. coffese Desm. on coffee.™* ^^ Shear. Valsaceae (p. 223) S
. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 277 globose, with a short, conical ostiole, walls black, carbonous to leathery; asci cylindric, 8-spored; spores elliptic, continuous, brown, imappendaged; paraphyses usually present. Over one hundred species, chiefly sapro- phytes. A. sullae Montem. occurs as the cause of a leaf spot on sulla.^** Fig. 206.—a. des- A. bohiensis (Hmp.) Speg. is on cacao; Z^g,I'^^ut^^S; A. destruens Sh. on cranberry; spores; 11, germi- Dating spore. After A. coffese Desm. on coffee.™* ^^ Shear. Valsaceae (p. 223) Stroma effused, subglobose, conic, or pulvinate, often indefinite; perithecia sunken in the stroma, scattered or clustered, black, leathery; asci cylindric or clavate; paraphyses usually present. Over one thousand species, chiefly saprophytic. Conidia are present on hyphse or in pycnidia. Key to Genera op Valsaceae Spores I-celled Spores cylindric or ellipsoid, with a brown membrane 1- Anthostoma. Spores ellipsoid, curved or not, with a hyaline membrane 2. Valsa, p. 278. Spwres more than I-celled Spores with cross walls only Spores hyaline Spores unappendaged Spores ellipsoid or fusoid 2 to 4- celled 3. Diaporthe, p. 278. Spores elongate, fusoid, constricted in the middle 4. Vialaea. Spores appendaged, 1 appendage at each end and 2 or 3 in the mid- dle 5. Caudospora. Spores brown Spores 2-celled, eUipsoid 6. Rhynchostoma. Spores many-celled, fusoid 7. 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
