. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. gS MYCOLOGY The important genera of the family are Mucor, Rhizoptis, Phycomy- ces, Absidia, Sporodinia, Thamnidium, Dicranophora, Pilaira and Ptlo- holiis. The genus Mucor, a key for the identification of the species will be given at the end of the book, was established in 1729. by Micheli. The genus may be divided into three groups of species. The first division includes those species with unbranched spcsrangiophores, such as Mucor mucedo. The second group comprises the moulds with clu
. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. gS MYCOLOGY The important genera of the family are Mucor, Rhizoptis, Phycomy- ces, Absidia, Sporodinia, Thamnidium, Dicranophora, Pilaira and Ptlo- holiis. The genus Mucor, a key for the identification of the species will be given at the end of the book, was established in 1729. by Micheli. The genus may be divided into three groups of species. The first division includes those species with unbranched spcsrangiophores, such as Mucor mucedo. The second group comprises the moulds with clus- tered branches of the sporangiophores, as Mucor corymbifer, M. erectus, M. fragilis, M. pusillus, M. racemosus, and M. tenuis. The third sec- tion is made up of species the sporangiophores of which Fig. -Details of Chlamydomucor racemosus showing oidia, sporangia and zygo- spore formation. branching. Such are Mucor alternans, M. circinelloides, M. javanicus, M. Rouxii and M. spinosus. (Also consult pages 695-702.) The oldest known species, Mucor mucedo, was described fully for the first time by O. Brefeld in 1872. Stiff sporangiophores, 3° to 40/i thick, arise from the mycelium and are 2 to 15 cm. in height. Each bears a single globular sporangium 100 to 200/i in diameter and the sporangial wall is beset with fine needles of calcium oxalate. The spores are ellipsoidal 3 to 6^ by 6 to 12/i with faint yellowish cell contents. As previously described, conjugation is between two similar gametes from + and — mycelia. Mucor racemosus, also known as Chlamydomucor. 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
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1917
