XXIII. 



JUNCACE^E. 



Luznla pilosa, Willd. ; quite rare; in Ham's Ravine Woods and 

 along Furnace Brook, above Silvernail Bridge. — L. campestris, 

 DC. ; common. 



Juncus effusus, L. ; very common in our swamps and marshes. — I. 

 marginatus, Rostk. ; not rare ; below inlet of Thompson Pond, 

 etc. — J. bufonius, L. ; not frequent ; in meadovr road, by She- 

 komeko bridge, Milton Smith Place ; Hunting Hill. — J. tenuis, 

 Willd. ; very common. —J. pelocarpus. E. Meyer ; quite rare, 

 N. shore of Thompson Pond; common along Mt. Riga Pond. — 

 J. articulatus, L. ; along streams E. of Mt. Riga. — J. accumina- 

 tus, Michx. ; along Poughkeepsie R. R., above Stevens's Grove ; 

 by Fowler Spring, Little StissingMt, etc. — J. nodosus L. ; com- 

 mon ; Win. Simmon's Mountain Meadow; Stissing Pd., S. 

 meadow, etc. — J. Canadensis. J. Gay ; common : Vat: longicau- 

 datus, Englm. ; rather common ; W. shore of Stissing Point ; 

 Mt. Riga Pond, etc. : Vat: brachycephalus, Englm. ; not rare; 

 Drowned Land marshes, with Valeriana sylvatica ; — also, more 

 contracted, in Bryant Hoysradt Marsh and W. of Stissing Point 

 with preceding variety : Vat: coarctatus, Englm. ; not found on 

 the low lands of Pine Plains, but very abundant in moist 

 ground on the mountains, particularly along shores of Mt. Riga 

 Pond- 

 Thanks are due to Dr. Geo. Engelmann, of St. Louis, for his 



revision of my determinations in this somewhat puzzling genus. 



PONTEDERIACE^. 



Pontederia cordata, L. ; very abundant in most of the ponds : Var. 

 angustifolia, Torr., in Drowned Lands and Bryant Hoysradt 

 marshes. 



Schollera graminea, Willd. ; rather common ; along E. shore of Stis- 

 sing Point, Stissing Pond, etc. 



Xyridace.e, 



Xyris flexuosa, Muhl., Chapman; rare; Grass Pond, Mt. Riga : Var. 



pusilla, Gray, abundant along borders of Bingham Pond. — X. 



Caroliniana, Walt, ; frequent ; Jno. Fingar Cranberry Marsh ; 



Van Tassel Pond Marsh, and borders of Round Pond, Stanford. 



Eriocaulonace.e. 



Eriocaulon septangulare, With.; common; Mud Pond; along 

 muddv shores of Mt. Riga Pond, its usual height is only one to 

 two inches. 



Cyperace.e. 



Cyperus diandrus, L. ; quite -common ; with C. inflexus, Thomas 

 Mill-pond, etc. — C. inflexus, Muhl. ; quite abundant about 

 Thomas' Old Mill-pond, Shekomeko Ck., the only habitat of 

 this fragrant little galingale I have discovered. — C. dentatus 

 Torr. ; rarely found in some of our large sandy swamps. — C. 

 phymatodes, Muhl. ; along Roelif Jansens Kill. — C. strigosus, 

 L. ; common. — C. Michauxianus, Schultes, quite common; 

 Round Pond; Stissing Pond, etc. — C. filiculmis, Vahl. ; grows 

 quite plentiful in sandy fields near Mt. Riga. 



