114 FLORA OF THE UPPER SUSQUEHANNA. 



J. bufonius L. Toad Rlsh. Very plentiful about pools that 

 dry up in summer. 



J. articulatus L. Jointed Rlsh. Big Butler Lake and else- 

 where not rare, Graves. The only stations reported. 



J. acuminatus Michx, Sharp -poixted Rush. Very common in 

 low grounds. Heads often proliferous. 



J. nodosus L. Knotted Rush. Frequent at Oxford, Coville. 



J. Canadensis J. Gay. Canada Rush. Frequent in swamps at 

 Preston, McDonough and German, Coville. 

 JUNCOIDES Adans. 



J. pilosum ( L.) Kuntze. Hairy Wood Rush. Common through- 

 out in moist woodlands and on shady banks. Plant grass-like ; 

 flowers like minute brownish lilies. May. ( Liiziila vernalis 

 DC.) 



J. campestre (L.) Kuntze, Common Wood Rush. Plentiful in 

 open woods in dry or moist soil. Much resembles the preced- 

 ing, but with flowers in close clusters. ( Lu:ziila canipestris 

 DC.) 



TYPHACE/E. 



TYPHA L. 



T. latifolia L. Cat-tail. Abundant in swamps throughout our 

 range. A well-known plant. 



T. angustifolia L. Narrow-leaved Cat-tail. In ditches along 

 the railway at Oxford, possibly introduced from passing trains, 

 Coville. The only station. 



SPARQANIACE/C. 



SPARGANIUM L. 



S. eurycarpum Engelm. Broad-fruited Bur-rekd. Common 

 in marshes and the borders of streams. Leaves somewhat re- 

 sembling the cat-tail; fruit assembled in globular heads. 



S. simplex Huds. Sind-le-stemmed Buk-keed. Less common 

 than the preceding. Plant much smaller; inflorescence not 

 branched. 



