APHANOCHAETE. 119 



Genus 20, APHANOCHAETE, A. Br. 



Articulate, branched filaments, prostrate ; sometimes creeping, 

 and sometimes more or less united into an irregular stratum. 

 Branches decumbent or ascending, cells usually bearing on their 

 apex or back, a longer or shorter bristle or spine. Oogonia not 

 observed. 



APHANOCHAETE REPENS, A. Br. 



Filaments and branches procumbent, adpressed ; cells 

 slightly swollen, as long as broad, bearing on the back a 

 short bristle. 



Diameter of cells, 5-10 /*. 



Parasitic on Cladophora and other algse. 

 Plate CV, fig. 8, a simple filament on Cladophora. 



APHANOCHAETE GLOBOSA, (Nord.) Wolle. 



Thallus somewhat globose, filaments procumbent; cells 

 globose, or now and then ovate, supporting on the back of 

 each a seta, often very long. The thallus is involved in a 

 colorless mucus. 



Diameter of cells, 14-16 //. 



Syn. Herposteiron globosa, Nord. 



Plate CV, fig. 5, a group of cells as they frequently occur 

 in pond waters. 



Fig. 6, a series of cells, may be an undeveloped condition 

 or may be another species ; farther observation desirable for 

 positive identification. 



A true Aphanochaete is filamentous, but this form has very 

 often the cells scattered, as fig. 5; more rarely are they 

 arranged as fig. 6. It may be well to note also, the globose 

 body has a conical neck, flask-like, to which the long seta is 

 attached. 



G. von Lagerheim describes a plant in a report made to the 

 Academy of Natural Sciences, Stockholm, 1883, which is 

 evidently nearly related to this species ; it is globose, is in- 

 volved in a hyaline gelatinous sheath and carries a long seta 

 however, there are only 2 or 4 cells in a tegument and the 

 color is oerugmeo-coerulea. 



APHANOCHAETE VEKMICTJLOIDES, Wolle. 



Cells polymorphose, not usually connected ; somewhat 

 globose, depressed globose, elongate, curved, worm-like; 



