. Comparative morphology of Fungi. Fungi. 258 COMPARATIVE MORPHOLOGY OF FUNGI and some relatives (like Aspergillus herbariorum) a helical ascogonium is formed, from whose stipe springs an antheridium which climbs along the helix. At times the antheridium may also be lacking (Oltmanns, 1887). In some species of Sordaria (as in PeniciUium crustaceum) antheridium and ascogonium coil helically (Nichols, 1896). In some other forms as Chaetomium spirale, C. globosum (C. Kunzeanum var. chlorinum) (Vallory, 1911), Sordaria fimicola (Fimetaria fimicola), S. merdaria (F. merdaria) and Podospora hirsuta
. Comparative morphology of Fungi. Fungi. 258 COMPARATIVE MORPHOLOGY OF FUNGI and some relatives (like Aspergillus herbariorum) a helical ascogonium is formed, from whose stipe springs an antheridium which climbs along the helix. At times the antheridium may also be lacking (Oltmanns, 1887). In some species of Sordaria (as in PeniciUium crustaceum) antheridium and ascogonium coil helically (Nichols, 1896). In some other forms as Chaetomium spirale, C. globosum (C. Kunzeanum var. chlorinum) (Vallory, 1911), Sordaria fimicola (Fimetaria fimicola), S. merdaria (F. merdaria) and Podospora hirsuta (Pleurage hirsuta), as in Aspergillus flavus and A. fumigatus, only an ascogonium is formed which develops in an unknown manner to ascogenous hyphae (Dangeard, 1907). Only for Sordaria macrospora (Pleurage macrospora), Sporormia intermedia (Dangeard,. Fig. 172.—Sordaria macrospora. 1. Elongate ascogonium with sheath hyphae. Sporormia intermedia. 2. Young perithecial fundaments, the upper showing an antheri- dium. (After Dangeard, 1907.) 1907) and S. leporina (Delitsch, 1926) has a new, peculiar relationship been determined. In the former the ascogonium is not coiled but ver- tical (Fig. 172, 1) and divided into several short multinucleate cells. In the latter a typical ascogonium is no longer formed. A hyphal cell becomes barrel shaped (Fig. 172, 2) and is septate in three dimensions to a small node. At times before it is septate, a hyphal branch approaches it and anastomoses with it, but details of the process, as those of Sordaria macrospora, are unknown. According to the structure of the mature fructifications, the Sord- ariaceae may be divided into two tribes, the Chaetomieae and Sorda- rieae; in the former the perithecia are generally covered with a thick felt of spiral or forked hairs, which the latter lack; these differences, however, are Please note that these images are extracted from scanned page images that may have been digitally enhanced for readab
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