. The fungi which cause plant disease . Plant diseases; Fungi. 414 THE FUNGI WHICH CAUSE PLANT DISEASE Spores hyaline 10. Hydnum, p. 414. Spores colored 11. Phaeodon. Teeth iammeliform 12. Sistotrema. Teeth connected at base, coriaceous Cystidia none 13. Irpex, p. 415. Cystidia present 14. Hydnochsete. Sporophore perennial, punky or woody Upper surface smooth, or sulcata 15. Echinodontiuin, Upper surface zonate 16. Steccherinum, p. 416. Hydnum Linnaeus Sporophore cuticular, leathery, corky, woody or fleshy, variable in form, resupinate; pileus, shelving, or bushy branched; hymenium bese
. The fungi which cause plant disease . Plant diseases; Fungi. 414 THE FUNGI WHICH CAUSE PLANT DISEASE Spores hyaline 10. Hydnum, p. 414. Spores colored 11. Phaeodon. Teeth iammeliform 12. Sistotrema. Teeth connected at base, coriaceous Cystidia none 13. Irpex, p. 415. Cystidia present 14. Hydnochsete. Sporophore perennial, punky or woody Upper surface smooth, or sulcata 15. Echinodontiuin, Upper surface zonate 16. Steccherinum, p. 416. Hydnum Linnaeus Sporophore cuticular, leathery, corky, woody or fleshy, variable in form, resupinate; pileus, shelving, or bushy branched; hymenium beset with pointed spines; basidia with 4 sterigmata; spores hya- line. The species of this genus, between two hundred fifty and three hundred, are mostly sapro- phytes but a few are true parasites on woody plants. H. erinaceus Bui.*' Cap 5-30 cm. wide, white, then yellowish or somewhat brownish, the branches form- ing a dense head covered with teeth, fleshy; stem short and stout, 2-8 cm. long and thick, or entirely lack- ing; teeth 3-10 cm. long, slender, densely crowded; spores globose, clear, 5-6 m- The name refers to the ap- pearance of the head. It is the cause of a white rot on many deciduous trees, chiefly oaks. The rotted wood is soft and mushy. Numerous large holes filled with masses of light yellowish fluffy mycelium occur in the heart-wood. Sporophores are often absent on the rotted tree. H. septentrionale Fr.** Sporophores in bracket-like clusters, up to 20-30 cm. wide by. I''iG. 298.—Fruiting body of Hydnum erina- ceus in a hollow log. After von Schrenk and 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
Size: 1662px × 1504px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1913
