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, coarse reticulation, violaceous, pale, 10-12 mu. This is a very interesting species closely related to the preceding from which it differs chiefly in the reticulation and generally more uniform character of the spores. The author hesitated about the generic reference, finally referring it to _Diachaea_ despite the lack of calcium, because it was sessile and had a peridium rather more persistent than is usual in comatrichas. But the presence of lime in stipe and columella is an essential element in the diagnosis of _Diachaea_, while length of stem is everywhere variable in stipitate forms of every genus, and the persistence of the peridium is also an uncertain factor; hangs on long in _C. typhoides_, _e. g._ On dead twigs, etc.--Philadelphia,--_Mr. Bilgram_; New Hampshire. 3. COMATRICHA FLACCIDA _List._ 1894. _Comatricha flaccida_ List., Morg., _Jour. Cin. Soc._, p. 51. 1894. _Stemonitis splendens_, var. _flaccida_ List., _Mycetozoa_, p. 112. 1894. _Comatricha flaccida_ (List.) Morg., Macbr., _N. A. S._, p. 133. 1911. _Stemonitis splendens_, var. _flaccida_ List., _Mycetozoa, 2nd ed._, p. 146. Sporangia semi-erect, close crowded in tufts two inches in diameter, ferruginous, from a dark brown hypothallus, sessile or short stipitate; columella weak, crooked, percurrent, generally enlarged irregularly at the apex; capillitium of few, slender, brown branches which anastomose sparsely and irregularly as in _C. irregularis_, and present when freed from spores the same chenille-like appearance; spore-mass ferruginous brown; spores by transmitted light bright reddish brown, minutely warted, 8-10 mu. "Growing on old wood and bark of Oak, Willow, etc. The component sporangia 5-10 mm. in length. The early appearance is much like that of a species of _Stemonitis_, but the mature stage is a great mass of spores with scanty capillitium, as in _Reticularia_; the columellas, however, are genuine and not adjacent portions of wall grown together."--_Professor Morgan._ Professor Morgan's herbarium material is at hand for study. It meets his description, needless to say, very generally. In what remains of the type the membranous connections are obscure; in fact the relation of such peridial (?) fragments to the capillitium in any way, is no longer evident. But in any event the colony does not impress one as something prematurely or improperly developed, a stemonitis gone begging;--nothing
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