104 JOURNAL OF THE [October, 



Throughout eastern North America and the Rocky Mountain 

 region ; not seen by me from the Pacific coast. 



Mr. Clarke has concluded to hold this up as a species, but in 

 this I have not been able to agree, 

 Var. WATSONI (C. C. Babington), Clarke, Journ. Bot. xxv. 268 



(1887). 

 Eleocharis Watsoni, C. C. Babington, Ann. Nat. Hist. (II.) 

 V. 10 (1852). 

 Stated by Mr. Clarke (1. c.) to occur in Newfoundland, Lab- 

 rador and subarctic America, and (in litt.) to be a very trifling 

 depauperate form or variety with a castaneous spike. 



As recognized by me this has been collected at Brackley 



Point, Prince Edward Island, Macoun ; Hudson's Bay, Burke. 



Var. viGENS, Bailey, in Herb. Gray. Culm stout, thick, very 



spongy, constricted at the summit, nearly as thick as the 



ovate spike. 



Rocky Mountains, Nuttall ; Niagara River, N. Y., Clinton ; 



Huntington Valley, Nevada, Watson, 1210; shore of Lake 



Champlain, Highgate Springs, Vt., H. G. Jesup. 



14. E. NODULOSA (Roth), Schultes, Mant. ii. 87 (1824). 

 Scirpus nodiilosus. Roth, Nov. Plant. Spec. 29 (1821). 

 Eleogenus nodulosus, Nees in Mart. Fl. Bras. ii. 104 (1842). 



In brooks, Santa Catalina Mts., Arizona, Pringle ; swamps, 

 Abbeville, La., Langlois. 



Coban, Guatemala, Tuerckheim, 1266 ; Mirador, Mex., Lieb- 

 mann ; Cuba, Wright, 3374 in part. 



SUB-GENUS EUELEOCHARIS. 

 {A) Scirpidium. 



15. E. ACicuLARis (L.), Roem. & Schultes, Syst. Veg. ii. 154 



(1817). 

 Scirpus acicularis, L. Spec. PI. 71 (i753)- 

 Scirpus trichodes, Muhl. Gram. 30 (181 7). 

 Chcetocyperus urceolatus, Liebm. Mex. Halvg. 243 (1849). 

 Throughout North America, extending into Mexico. 

 Var. MINIMA, Torr. MSS. Culms 5-15 mm. high, densely 

 csespitose ; achenium smaller than in the type, ribbed and 

 cancellate ; bristles none. Torrey Herb., ex. Herb. 

 Olney, 1872 ; Oregon, E. Hall, 566. This may be a species. 



