334 
THE VEGETATION OF THE DISTRICTS OF' 
728. Hydrocoleum Kg. 
* Hydrocoleum Rurzii Mart. 
Muddy banks of canals, also salt-lakes. 
* Hydrocoleum Lenormandi Mart. 
Salt-lakes, Calcutta. 
720. Microcoleus Desmaz.. 
* Microcoleus salinus (Kg.). 
Kidderpore near Calcutta.. 
* Microcoleus Lyngbyei Kg. 
Calcutta, salt-lakes. 
730. Leptothrix Kg. 
* Lepottlirix subtillissima Kg. 
Damp walls, general. 
* Leptothrix mamillosa Menengh. 
Salt-lakes, Calcutta. 
731. Dictyonema Ag, 
* Dictyonema fuscescens Mart. 
Stagnant pools, about Calcutta. 
CLII.-AOSTOCACEdE, 
. 732. Nostoc Vauch, 
*Nostoc gregarium Thuret. 
Submerged in ponds. 
733. Anabsena Bory. 
* Anabsena mollis Kg. 
Muddy edges of ponds, also in water. 
734. Cylindrospermum Kg. 
* Cylindrospermum spirale Kg. 
Floating in ponds. 
735. Hormosiphon Kg. 
* Hormosiphon ooriaceus Kg. 
Banks of the river Hughli at Botanic Garden, Shibpur. 
