. Elementary botany. Botany. Fig. 133- A mucor (Rhizopns nigricans); at left nearly mature sporangium with columella showing within; m the middle is ruptured sporangium with some of the gonidia clinging to the colu- mella ; at right two ruptured sporangia with everted columella. capable of growing and forming called chlamy do spores. the mycelium again. They are sometimes Water Moulds (Saprolegnia). 279. The water moulds are very interesting plants to study because they are so easy to obtain, and it is so easy to observe a type of gonidium here to which we have referred in our studies ofthealg
. Elementary botany. Botany. Fig. 133- A mucor (Rhizopns nigricans); at left nearly mature sporangium with columella showing within; m the middle is ruptured sporangium with some of the gonidia clinging to the colu- mella ; at right two ruptured sporangia with everted columella. capable of growing and forming called chlamy do spores. the mycelium again. They are sometimes Water Moulds (Saprolegnia). 279. The water moulds are very interesting plants to study because they are so easy to obtain, and it is so easy to observe a type of gonidium here to which we have referred in our studies ofthealgae, the motile gonidium, or zoogonidium. (See appen- dix for directions for cultivating this mould.) 280. Appearance of the saprolegnia.—In the course of a few days we are quite certain to see in some of the cultures deli- cate whitish threads, radiating outward from the bod) 01 the tl\ in the water. A few threads should be examined from day to day to determine the stage of the fungus. 281. Sporangia of saprolegnia.—The sporangia of saprolegnia can be easily detected because they are much stouter than the. 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 Atkinson, George Francis, 1854-1918. New York, H. Holt and company
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