. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. I02 MYCOLOGY cate sporangial wall, which soon disappears leaving the spores on a hemispheric columella. These spores are ii to 70M broad. The 300/j broad zygospores are produced from similar branches of a dichotomously branched zygosphore. The mycelium of the species of Thamnidium enters the nutritive substratum. The large sporangia are terminal while the smaller secondary sporangia are borne on lateral branches in whorls below the terminal sporangium. This is typically seen in Fig
. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. I02 MYCOLOGY cate sporangial wall, which soon disappears leaving the spores on a hemispheric columella. These spores are ii to 70M broad. The 300/j broad zygospores are produced from similar branches of a dichotomously branched zygosphore. The mycelium of the species of Thamnidium enters the nutritive substratum. The large sporangia are terminal while the smaller secondary sporangia are borne on lateral branches in whorls below the terminal sporangium. This is typically seen in Fig. 33.—Details of sporangia and sporangiophores of Pilobulus. i, P. micro- sporus; 2, P. roridus; 3, 4, 5, P. anomalus; 6, zygospore of P. anomalus. (After Brefeld.) elegans (Fig. 32). A related species Th. Fresenii has an upright termi- nal sporangiophore, which is either sterile, or ends in a large terminal sporangium, while the smaller sporangia are as in Tk. elegans. In Th. amoenum, the lateral smaller sporangia are borne at the end of coiled secondary sporangiophores. The secondary sporangia suffer reduction in Th. chcetocladioides (Fig. 32) which in addition to having a straight terminal spine-like hypha in place of the terminal sporangia has some of the lateral microsporangia replaced by sterile branches. 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 Harshberger, John W. (John William), 1869-1929. Philadelphia : P. Blakiston's Son & Co
Size: 1587px × 1574px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1917
