Elementary botany (1898) Elementary botany . elementarybotany00atki Year: 1898 138 MORPHOLOG Y. 302. The sac fungi or ascomycetes.—The large group of fungi to which this uncinula belongs is known as the sac fungi, or ascomycetes. While Fig. 165. Willow mildew; bit of mycelium with erect conidiophores, bearing chain of gonidia ; gonidium at left germinating. FiS- l66- Fig. 167. Fruit of willow mildew, showing hooked ap- Fruit body of an- pendages. Genus uncinula. other miiaew with Figs. 166, 167.—Perithecia (perithecium) of dichotomousappen- two powdery mildews, showing escape of asci dages
Elementary botany (1898) Elementary botany . elementarybotany00atki Year: 1898 138 MORPHOLOG Y. 302. The sac fungi or ascomycetes.—The large group of fungi to which this uncinula belongs is known as the sac fungi, or ascomycetes. While Fig. 165. Willow mildew; bit of mycelium with erect conidiophores, bearing chain of gonidia ; gonidium at left germinating. FiS- l66- Fig. 167. Fruit of willow mildew, showing hooked ap- Fruit body of an- pendages. Genus uncinula. other miiaew with Figs. 166, 167.—Perithecia (perithecium) of dichotomousappen- two powdery mildews, showing escape of asci dages. Genus containing the spores from the crushed fruit microsphaera. bodies. many of the powdery mildews have a variable number of spores in an ascus, a large majority of the ascomycetes have just 8 spores in an ascus, while
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