PLANTS OF ONEIDA COUNTY AND VICINITY. 145 



debilis, Gray. Weak- stemmed Juncus. 



Muddy bottoms of shady swamps. 



Its habit clearly distinguishes this species; the stems lying flat on the 

 ground, radiating in all directions from tbe root, nearly two feet in length. 



Infrequent. August, September. 



ACUiiiXATUS, Michx. Sharp-fruited Juncus. 



Marshes. Common along low shores in the north woods. In the swamps of 

 Warren, south Herkimer county, between Jordanville and Richfield springs. 

 Oneida county, Knieskern. Jefferson county, Vasey. Head of Seneca lake, 

 Gray. Crooked lake. Sarticell in herb. Ham. Coll. Frequent on the southern 

 borders of Bergen swamp, Genesee county. Abundant. July- September. 



articulatus, L. Articulate Juncus. 



"Water-sides. Dexter, Jefferson county, Vasey. Penn-Yan, Sarticell in herb. 

 Ham. Coll. 



var. pelocarpus, G~ray. Brown-fruited Juncus. 



Shores. Onondaga lake, on all sides, in shallow water. Banks of Genesee 

 river near Avon; mouth of the Genesee, Sarticell in herb. Ham. Coll. 



Rare. August. 



nodosus, L. Knott ed-leaved Juncus. 



TTater-borders, muddy banks. North woods. Alder creek. Cedar lake, 

 south Herkimer county. Onondaga lake. Abundant. July. 



var. megacephalus, Torrey. Great-headed Juncus. 



Sandy shores of Lake Ontario, Gray, Torrey Fl. N.T.: bot. Wet soil near 

 the Lake shore, Monroe count}-, L. Holzer. Rare. July. 



coxradi, Tuckerman. Determined by Coxrad. 



Sandy shores. Albany, Beck in herb. Plentiful on the banks of Third and 

 Fourth lakes, north Herkimer county; frequently viviparous. Rare. July. 



sttgius, L. Stygian Juivcus. 



In an extensive sphagnous swamp bordering Perch lake. Jetferson county; 

 not previously known as a native of North America, Gray in Rare plants of 

 Northern X.Y. Thirty years ago or so, it was found near the head of the 

 lake, on a wet quaking bog which extended to the water. But the lake has 

 been raised at' its outlet, or lowered; .either of which would destroy the lo- 

 cality. Others have tried for years, but have not rediscovered the plant, Gray. 



Specimens were taken from this station also by Craice: Wood: Vasey. 



The heads are not always single and terminal : many specimens have two, 

 one to three inches apart. Local. July, August. 



tenuis, Willd. Slender Juncus. 



Roadsides, damp grounds. Common. June. 



BTTLBOSUS, L., var. gerardi, Gray. Black-grass. 



Rivulet-sides and wet banks, east of Salina and west of Onondaga lake, in 

 thick patches. Common there. Local inland. August. 



butonius, L. Toad Juncus. 



Ditches, shores. Common. August. 



PONTEDEEIACE.E. PldcereUceeds. 



POXTEDERIA, L. Common Pickerel-weed. 



cordata, L. Cordate-base-leaved Pontederia. 



Shallow waters of lakes, ponds, rivers. Otsego lake. Miss S. Cooper. Lakes 

 of the north woods. Oneida lake, Knieskern. Bays and inlets on Lake On- 

 tario. Frequent. 



Tar. AXGrsTlFOLiA, Gray. Narrow- leaved Pontederia. 



Borders of Canaderasa lake, Otseso county, Gray. July - September, 

 [ Senate No. 90.] 10 



