REPORT ON FORESTS. 189 



ing good sized groves. Represented in the tension zone by 

 scattered individuals or limited aggregations, especially along 

 water-courses. Almost limited to scattered individuals in the 

 coniferous zone. The probabilities are that the species was 

 formerly more abundant in the tension zone than the present 

 distribution indicates. It is the characteristic pine of the 

 deciduous zone. 



Pinus rigida. Exceedingly abundant in the coniferous zone, 

 where it often forms the bulk of the arboreal vegetation over 

 large areas. Less abundant in the tension zone. Represented 

 by scattered groves or individuals in the deciduous zone. It is 

 the characteristic pine of the coniferous zone. 



Pinus Virginiana. Abundant in the tension zone, especially 

 in the clay belt. Less abundant in the coniferous zone, but fre- 

 quently forming small forests or groves. Recorded from the 

 deciduous zone only at widely separated localities Riegelsville, 

 Milford and New Brunswick. 



Pimis echinata. Most abundant in the tension zone, particu- 

 larly in the marl belt, often forming groves of considerable 

 extent. Less abundant in the coniferous zone and not recorded 

 from any locality within the deciduous zone. This and the pre- 

 ceding species may be regarded as specially characteristic of the 

 tension zone. 



Cham&cyparis thyoides. Forms the bulk of the vegetation 

 in the cedar swamps of the coniferous zone. Rare in the tension 

 zone. Locally in limited numbers in certain isolated swamps 

 in the deciduous zone : Secaucus, New Durham, High Point, etc. 



Rhododendron maximum. Abundant in the deciduous zone, 

 often forming dense thickets along streams and lake borders. 

 Recorded from but one locality in the tension zone, in the 

 vicinity of Burlington and Kinkora, and from but one in the 

 coniferous zone, at Sicklerville. 



Ilex opaca. Common in wet woods, especially near tide- 

 water, in the coniferous zone. Less abundant in the tension 

 zone. Reported from but one locality in the deciduous zone, at 

 Carpentersville. 



Quercus Phellos. More or less abundant in the southern part 

 of the state in both the coniferous and tension zones. Further 

 north, especially abundant in the clay belt of the latter zone, 



