no REPORT OF NEW JERSEY STATE MUSEUM. 



Lygodium palmatum. 

 Dryopteris simnlata. 

 Woodwardia virginica. 

 Potamogcton oakesianus. 



" confcrvoides. 



Calaniagrostis cinnoides. 

 Sporobolus serotinus. 

 Pannicularia laxa. 

 Rynchospora fusca. 



" alba. 



Scirpus subterminalis. 



" torreyi; 

 Eleocharis robbinsii. 

 Eriophorum virginicum. 

 Cladium mariscoides. 

 Carex limosa. 



" trisperma. 



" canescens disjitncta. 



" leptalea. 

 Scheuchzeria pahistris. 

 Orontium aquaticum. 

 Eriocaulon septangulare. 



Xyris carolincnsis. 

 Juncus pclocarpus. 

 Drosera longifolia. 

 Sarraccnia purpurea. 

 Brasenia purpurea. 

 Nymphaea variegata. 

 Triadenum virginicum. 

 Ilicioides mucronata. 

 Pyrola chlorantha. 



'' secunda. 

 Rhododendron maximum. 

 Gaultheria procumbens. 

 Vaccinium pennsylvanicum. 

 Cham?edaphne calyculata. 

 Limnanthcmum lacunosum. 

 Menyanthes trifoliata. 

 Scutellaria galericulata. 

 Utricularia purpurea. 



" cornuta. 



" clandestina. 



" intermedia. 



Viburnum cassinoides. 



To which may be added from the other parts of the glaciated 

 region of Pennsylvania : 



Carex collinsii. 



Juncus militaris. 



Some few of these are of boreal origin and have been driven 

 south at some time and remained as isolated colonies in New Jer- 

 sey, but the bulk of them are identical or similar to those which 

 Dr. Harper mentions and which I agree with him and Dr. Harsh- 

 berger have spread from the Piedmont region into the mountains 

 upon the retreat of the ice just as they spread into the coastal 

 plain upon its elevation from the sea. I am able to cite more 

 isolated colonies of these plants existing in the Piedmont region 

 than were known to Dr. Harper, but this, it seems to me, 

 strengthens rather than weakens the theory, as do the lists 

 of dry ground plants common to the Piedmont and coastal 

 plain. Both classes of plants exist, as already explained, only 

 in isolated colonies in the Piedmont, but were bogs more 

 plentiful in this region, and had their draining been carried on 

 less assiduously, the evidences of this early flora would have been 

 more frequent. As it is, farming has been carried on so exten- 



