MERINGOSPHAERA (Lohmann) Pascher 1932a, p. 200 



Cells globose or subglobose, solitary, the cell wall rather thick and 

 firm (in two sections ?), silicified, smooth or sculptured, beset with 

 long or short spines which may be sparse and scattered or numerous 

 and evenly distributed, the spines either tapering or truncate, 

 straight or twisted; chromatophores 1 to many, golden-brown parietal 

 plates, with or without pyrenoids; reproduction by autospores 

 (possibly zoospores also ?). 



Meringosphaera spinosa Prescott in Prescott, 



Silva, & Wade 1949, pp. 87, 93 



PI. 95, Figs. 21, 22 



Cells spherical, the wall sparsely beset with relatively long, fine, 



tapering spines; chromatophores numerous ovate, parietal discs; 



( pyrenoids ? ) ; cells 10-12.5/a in diameter. 



Our specimens are referred to the marine genus Meringosphaera 

 on the basis of the wall features and the shape of the cells. The 

 smooth walls (except for the spines) prevent the inclusion of this 

 species with other genera that have spherical cells. It should be 

 compared with M. brevispina Pascher, a marine species with 3-4 

 band-like chromatophores. 



In shallow water of acid bog lakes. Mich. 



MONALLANTUS Pascher 1939, p. 420 

 Cells solitary or in unjoined clusters of 2-4, sometimes arranged 

 in a series and inclosed by an inconspicuous film of mucilage, oblong 

 with parallel margins and broadly rounded poles, sometimes short 

 cylinders with slightly convex margins; cell wall smooth, sometimes 

 reddish; chromatophores 2-10, band-like or plate-like (occasionally 

 reticulate), parietal, with or without pyrenoids; leucosin granules 

 and red oil globules usually present; reproduction by heterokont 

 zoospores and autospores. 



Monallantus brevicylindrus Pascher 1939, p. 422 

 PI. 95, Fig. 24 

 Cells cylindric, one-third to one-half longer than broad; chromato- 

 phores (l)-2-4; cells 6-8 fjL in diameter, 9-12ju, long; zoospores with 

 2 flagella, amoeboid, ellipsoid, with 1 or 2 chromatophores. 

 In shallow water of acid bog lake. Mich. 



PERONE Pascher 1932b, p. 685 

 Cells solitary, sessile and epiphytic on leaves or among cells of 

 Sphagnum and other aquatic mosses, globose or depressed-globose, 



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