'«208 LEMNACEiE. — POTAMOGETONACE^. 



LEMNACEiE. 

 LEMNA, Linn. 



800. L. trisulca, L. 



Native ; ou water iu ditches and stagnant pools, frequent. 

 G. Marsh ditches about Avonmouth and Shirehampton. 

 S, Marsh ditches in the Cheddar valley. Clevedon. Easton. 



Radford. Weston-super-Mare. Yatton. Ditches south 



of Wedmore. 



801. L. minor, L. 



Native ; very common everywhere on stagnant water. 



802. L. gibba, L. 



Native ; on stagnant water, not very common. 



G. Plentiful in ditches of brackish water near the Severn, 



between the Passages and Avonmouth. Horfield. 



Shirehampton. Westbury-on-Trym. 

 S. Claverham. Yatton. Marsh ditches in the lowlands 



towards the Channel. 



803. L. polyrrhiza, L. 



Native ; chiefly in the peaty lowlands in the southern 



portion of the district, rather local. 

 G. Stapleton. Littleton-on-Severn, 

 S. Near Brent Knoll. Draycot. Portbury. Wedmore. 



Yatton. 



POTAMOGETONACE^. 



POTAMOGETON, Linn. 



804. P. natans, /.. 



Native; in rivers and ponds, rare. 



G. In the river Frome near Stapleton. Pond at Henbury. 



S. The Abbots' Pond. In the Avon near Brishngton. 



Clevedon. Yatton. VI. YII. 



