Scientific American Supplement, No. 385, May 19, 1883 by Various
page 95 of 130 (73%)
page 95 of 130 (73%)
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From these long filaments springs the fungus. The sporangia, or more
exactly the conidia, are composed of unilocular vesicles, perfectly colorless and transparent, which generally rise from one or both sides of the filaments of the mycelium, beginning as from little buds or eyes; very often several (two to three) sporangia occur placed one upon the other, at least on one side of the mycelium. With a linear magnitude of 480, the sporangia have a transverse diameter of one to five millimeters, or a little more in the larger specimens. The filaments of mycelium, under the same magnitude, appear exceedingly thin and finer than a hair. The shape of the conidia, though presenting some varieties, is, notwithstanding, always perfectly characteristic. Sometimes they resemble in appearance the segments of a semicircle more or less great, sometimes the wings of butterflies, double or single. It is only exceptionally that their form is so irregular. Again, when young, they are perfectly colorless and transparent; sometimes they are of a beautiful violet or blue color (mykianthinin mykocyanin). Upon this variety of the Limnophysalis hyalina depends the vomiting of blue matters observed by Dr. John Sullivan, at Havana, in patients affected with pernicious intermittent fever (algid and comatose form). In the perfectly mature sporangia, the sporidia have a dark brown color (mykophaein). From the sporidia, the Italian physicians, Lanzi and Perrigi, in the course of their attempts at its cultivation, have seen produced the Monilia penicinata friesii, which is, consequently, the second generation of the Limnophysalis hyalina, in which alternate generation takes place, admitting that their observations may be verified. The sporangia are never spherical, but always flat. When they are perfectly developed, they are distinctly separated from their filament of mycelium by a septum--that is to say, by limiting lines |
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