CATALOGUE OF PLANTS. 609 



MICROCOLEUS, Desmaz. 



M. chthonoplastes (Fl. Dan.), Thur. 



Marine. Atlantic: On the marshes, Atlantic City Morse. 

 M, pulvinatus, Wolle. 



Fresh water. Ocean : In a mill-race, Bamber Wolle. 

 M. terrestris, Desmaz. 



Terrestrial. On moist earth ; frequent. 





 M. ang-uiformis, Harv. 



Terrestrial. Same habitat. 

 M. hyalinus (Kiitz.), Kirch. 



Fresh water. In ponds, on Sphagnum. 



OSCILLARIA, Kiitz. 

 O. subuliformis, Harv. 



Marine. Atlantic : In brackish water and pools Martindale. 

 O. subtorulosa (Breb.), Farlow. 



Same habitat. 

 O. brevis, Kiitz. 



Fresh water. In marshes ; frequent. 

 O. tennis, Ag. 



In stagnant waters ; frequent. 

 O. gracillima, Kiitz. 



Fresh water. On small ponds. 

 O. limosa, Ag. 



Terrestrial. On wet earth ; frequent. 

 O. natans, Kiitz. 



Fresh water. On ponds ; frequent. 

 O. nigra, Vauch. 



Fresh water. In wet places ; frequent. 

 O. Frcelichii, Kiitz. 



Fresh water. On sluggish and stagnant waters ; frequent. 

 O. major, Vauch. 



Same habitat. 



