8 



Table 5 - Per cent o.f use,, per cent of abundance and index rating 

 of aquatio plants at Crane Lake and adjacent marsh, 1938. 



Plant 



per Cent 

 of Use 



Per Cent 

 of Abundance 



Index 

 Rating; 



Coontail ( Cerat'ophyllum demersum ) -"■■* 18.79 



Rice cut-grass ( Leersia c'ryzoides ) 17.42 



Nutgrasses ( Gyperus spp.) ' 12.35 



Marsh smartv;eed ( Polygonum Muhlenbergii ) 8.66 

 Buttbnbush ( Ceplialanthus oocidentalis ) 8.55 

 Water hemp ( Achida tuberculata ) 4.03 



Smartweeds ( Polygonum spp.)-::--;:- 2.35 



3ago pondweed ( Potamogeton pectinatus ) 2.02 

 Ar-ierlcan lotus ( Melumbo lutea ) ■ ■ ■ 1.51 

 "I'Jiite waterlily ( Castalla ' tuberosa ) 1.17 

 Longleaf pondweed ( Potamogeton america nus ) o«98 

 Teal grass ( Eragrostis hypnoides ) 0.88 



River bulrush ( Scirpus f luviatilis ) 0.37 

 Giant burreed ( Spargan ium eurycarpum ) 0.27 

 Spike rushes ( Eleocharis spp.) 0.14 



Marsh cord grass ( Spartina Mlchauxiana ) 0.02 

 Duck potato ( Sagittaria latifolia ) 0.01 

 Other native foods (total of 34) " 20.43 



1.40 

 • 3.50 

 0.00-:;- 

 2.80 

 abiindant 

 0.00-;:- 

 . 00-::- 

 1.60 

 72.90 

 6.10 

 0.10 

 0.00-;:- 

 9.10 

 0.00-::- 

 0.00-;:- 

 1.00 

 1.50 



13.42 

 4.98 

 high 

 3.09 

 medium 

 medium 

 medium 

 1.26 

 0.02 

 0.19 

 9.80 

 medium 

 0.04 

 low 

 low 

 0.02 

 0.006 



None recorded for the area. 



Other than Muhlenbergii . 



llo figure given because of difficulty of measurement 



