STAUROCARPUS. 177 



while from the genus Mcsocarpus, hereafter to be described, 

 it is separated by tlie form of the sporangium. 



But one species of this genus is described by British writers. 

 In a recent number of the " Annals " two others were added, 

 and I have now tlie pleasure of describing three other species. 



1. Staurocarpus glutinosus Ilass. 

 Plate XLVII. Fig. 1. 

 Char. Filaments of considerable diameter, Imjhhj mucous, 

 bluish green. Cells six or seven times as long as broad, 

 those being the longest which have conjugated. Sporidium 

 quadrangular, formed entirely by the transverse tubes. 

 Sporangia, when perfect, someivhat oval. 

 Mougeotia glutinosa, Hassall, in Annals of Nat. Hist. vol. 



xxii. pi. 7. fig. 1. 

 Hab. Hertford Heath : A. H. H. 



This is a very distinct and fine species, occurring abundantly 

 in boggy pools on Hertford Heath. Not unfrequently a 

 number of contiguous pairs of cells unite, forming arched 

 loops or links, separated from each other by the square 

 ovarium, which is the chief characteristic of the species. 



2. Staurocarpus ccerulescens Ilass. 

 Plate XLVII. Fig. 2. 



Char. Filaments of less diameter than those of Staurocarpus 

 glutinosus. Cells ustially eight or ten times as long as 

 broad. Endochrome, xchcn recent, ccerulescent ; when dried, 

 of a purple hue. Sporangia c?'z<c?/bn??, large, and filled 

 with zoospores of a greenish colour. 

 Staurocarpus capucinus Hassall, in Annals of Nat. Hist. 



vol. xii. p. 184. 

 Hab. Henfield : Mr. Borrer. Tunbridgc "Wells : Mr. 

 Jenner. Penzance : Mr. Ralfs. High Beech, Essex ; 

 A. H. H. 



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