PLANTS OF ILLINOIS. 



H 



var. androcladum, Gray. S. 



Wabash county, Schneck. 



var. angustit'olium. Gray. N. 



McHenry county, Vasey. 



NAIADACEJ5. 



NAIAS 



flexilis, Kostk. 



Ponds. Frequent. 



Indica, var. gracillima, Braun. 



Pomls. "Wabash county, Schneck. 

 ZANNICHELLIA 



palustris, L. 



Ponds. Peoria, Menard, Fulton and Henderson 

 counties, and probably elsewhere, but Scarce. 



POT AMOU ETON 

 natans, L. 

 Ponds. Frequent. 



Claytonii, Tuckerman. 



Fulton county, Wolf. 



Vaseyi, Robbins. X. 



Near Ringwood, McHenry county, Vasey. 



Spirillus, Tuckerraan. 



McHenry county, Vasey. 



hybrid us, Miehx. 



Ponds. Infrequent. 



rufescens, Schrader. N. 



McHenry county, Vasey. 



lonchites, Tuckerman. X. 



Chicago, Babcock : McHenry county, Vasey. 



pnlcher, Tuckerman. 



Mason county, Hall. 



gramineus, L. 



Near Chicago, Babcock ; McHenry county, Va- 

 sey : Hancock, Mead. 



lucens, L. 



McHenry county, Vasey : Kankakee, Hi!l : Wa- 

 bash, Schneck. 



perfoliate, L. 



McHenry county, Vasey : Kankakee, Hill. 



compress us, L. 



McHenry county, Vasey ; Kankakee. Hill ; Me- 

 nard, Hall. 



paucifloras, Pursh. 



Peoria county, Brendel : Kankakee, Hill ; Mc- 

 Henry, Vasey. 



pusillus. L. 



Peoria and Fulton counties, Brendel, Wolf : Me- 

 nard, Hall. 



peetinatus, L. 



Ponds. 



Frequent. 



ALISMACEJE. 



TRIGLOCHIN 



palnstre, L. X. 



Peoria county, Brendel ; Kane and McHenry. 

 Vasey. 



maritimum, L. X-E. 



Chicago, Babcock : McHenry county. Vasey. 

 SCHEUCHZERIA 



palustris, L. C. & N. 



Menard county. Hall : McHenry, Vasey. 

 A LIS MA 



Plantago, L., var. Americanum, Gr. 



Margins of ponds, &c. Common. 

 ECHINODORUS 



parvulus, Engelm. 



Mason and Cass counties. Mead. 



rostratus, Engelra. C. & S. 



About ponds, <tc. Peoria county, Brendel ; and 

 southward. 



radicans, Engelm. 



Menard county, Hall : and southward. 

 SAG ITT ARIA 



variabilis, Engelm. 



Ponds and ditches. Common. 



calycina, Engelm. 



Margins of ponds in Mississippi bottoms about 

 Oquawka, Henderson county : Menard county. 

 Hall. Rare.' 



heterophylla, Pursh. 



Ponds, often in water two or thi-ee feet deep. 



Frequent. 



graminea, Michx. 



Margins of ponds. Scarce. 



HYDROCHARIDACE.E. 



LIMNOBIUM 



Spongia, Richard. S. 



Ponds. Union county, Vasey. Brendel. 

 ANA CHAR IS 



Canadensis, Planchon. 



Ponds and slow streams. Common. 



