\"ar. phanerolepis P^ern. 



Tends to replace the species on the higher parts of tlic mountains, occasionally 

 descending to low elevations ; frequent in Coos, Grafton, and northern Carroll Counties. 



Tsuga canadensis (L.) Carr. Hemlock. 



Formerly a climax dominant of forests south of White Mountains at low eleva- 

 tions ; common at present in central and southern New Hampshire, becoming in- 

 frequent in Coos County; observed at 2,4fl0-feet elevation on Mt. Ohocorua in Albany; 

 most luxuriant on moist slopes and in ravines. 



Picea glauca (Moench.) A^oss. White Spruce. 



Common as a climax dominant north of Presidential Range and somewdrat abund- 

 ant in upper Connecticut Valley, as far south as Littleton, absent from rest of 

 state : outlying station in Warren ; often planted elsewhere but not spreading. 



P. abies (L.) Karst. Norway Spruce. 



Often planted, occasional seedlings persisting for some time ; intr(3duced from 

 Europe. 



P. rubens Sarg. Red Spruce. 



A climax dominant in mountains at medium elevations throug'hout state and at 

 lower elevations north of Presidential Range ; common in Grafton and Carroll 

 counties, southward only occasional, occurring rather generally above l,()(H}-feet 

 elevation ; often on poorer soils ; depressed specimen seen at 5,000 feet on Mt. Wash- 

 ington. 



P. mariana (Mill.) BSP. Black Spruce. 



T'nroughout state ; near tops of some of lower mountains and above tree-line in 

 Presidential and Franconia ranges ; generally occurring in lowland bogs and around 

 bog-ponds: The depressed forma sciiiifrostrata (Peck) Blake occurs in mats in the 

 alpine areas of the White Mountains. 



Larix laricina (DuRoi) K. Koch. .American Larch, Tamarack, Hackmatack. 



.At or near tree-line on Presidential and Franconia ranges, where occasional ; 

 common in poorly drained areas in northern New Hampshire at low elevations ; 

 becoming sporadic southward ; less common than black spruce in southern part of 

 state ; in alpine area of Presidential Range forma dcprcssa Rousseau occurs sparingly 

 as prostrate individuals. 



L. decidua Mill. European Larch. 



Escaped near planted trees in Strafford County, apparently spreading locally ; 

 introduced from Europe. 



Pinus Strobus L. AVhite Pine. 



Throughout state ; abundant old-field tree over much of New Hampshire at low 

 elevations; less common in climax forests but tending to perpetuate itself in drier 

 sites. Our largest tree; numerous records of trees more than 200 feet tall exist; 

 occasional specimens occur above 3,()l)IJ-feet elevation in mountains: Rhodora, 51:393- 

 394, 1949. 



P. resinosa Ait. Red or Norway Pine. 



Frequent but scattered throughout state at low elevation except in Coos County, 

 where rare ; stations at about 2,500 feet occur on exposed mountain slopes ; occasion- 

 ally dominant in sandy soil and on ledges : forma glohosa Rehder of dwarf dense 

 growth and rounded form was discovered in Wolfeboro, Carroll County the tvpe 

 locality: Journal Arnold Arb. 3:41, 1922. 



P. sylvestris L. Scotch Pine. 



Often i>lanted in earlier times for reforestation purposes and definitely spreading 

 in several localities ; not likely to persist long in competition with native species ; 

 introduced from Europe. 



P. rigida Mill. Pitch Pine. 



Common on dry rocky slopes and sandy areas at low elevations north to Presiden- 

 tial Range; outlying colony at Shelburne ; often occurs in burned-over areas since 

 it survives severe fires. 



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