. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 237 Conidia, 2. (=Coryneum beyerinckii) conidiophores short, crowded, from a minute subepidermal stroma; conidia single, elliptic-oblong, 1 to 5-septate, brown, about 36 x 15 /i- On drupaceous hosts. In spots on the bark the mycelium is often sterile, but when it becomes old distinct pustules usually show in a well developed subepidermal stromatic tissue and from these pustules, as they rupture the epidermis, the conidiophores are produced. Conidia usually abound on the surface of twigs which hav
. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 237 Conidia, 2. (=Coryneum beyerinckii) conidiophores short, crowded, from a minute subepidermal stroma; conidia single, elliptic-oblong, 1 to 5-septate, brown, about 36 x 15 /i- On drupaceous hosts. In spots on the bark the mycelium is often sterile, but when it becomes old distinct pustules usually show in a well developed subepidermal stromatic tissue and from these pustules, as they rupture the epidermis, the conidiophores are produced. Conidia usually abound on the surface of twigs which have borne affected leaves. They germinate readily and produce either a sooty super-. Fio. 172.—Section through a Coryneum pustule on peach. After Smith. ficial mold or if on new bark enter the host tissue and induce spotting. The conidial stage (Coryneum) of the fungus was grown in arti- ficial culture by Smith i" but no ascigerous stage corresponding with that of Vuillemin was found. A. geographicum (D. C.) Desm. is common on leaves of pome fruits and A. padi Grev. defoliates cherries in Europe. Guignardia Viala & Ravaz (p. 236) Perithecia sunken, globoid or flattened, black, leathery; ostiole flattened or papillate; asci clavate, 8-spored; spores ellipsoid or fusiform, hyaline, somewhat arched, 1 or 2-celled; paraphyses 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
