p. balsamifera L. var. balsamifera Balsam-Poplar, Hackmatack, Taccamahac. 



Stream-banks, river-sravels, and low ground; frequent in Coos County, extending 

 locally southward t.) central Carroll, Grafton, and Sullivan counties. 



Var. subcordata Hylander. 



Apparently not common; collections have 'been made in and near the Connecticut 

 ^^a'lley in Columbia, Plainfield, and Walpole. 



X. P. gileadensis Rouleau. Balm-of-Gilead. 



Formerly much cultivated, this ase.xually spreading pre^umed hybrid of /'. dcltoidcs 

 and P. balsamifera is widespread as an adventive. 



Myrica Gale L var. Gale. Sweet Gale. 



The two varieties of d/. Gale occur throughout at low elevations ; they tend to in- 

 tergrade freely in our material as to degree of pubescence, thus making it difficult 

 to classify many of the New Hampshire specimens ; the pubescent-leav-ed var. dale 

 is Eurasian and more northern in North America; the preponderance of Coos County 

 specimens belong to it. 



\'ar. subglabra ( Chev.) Fern. 



Of slightly more southern distribution, tlie var. sithfilaJ'ra is strictly of eastern 

 North America ; frequent in Coos County and about as common as var. Gale in 

 central and southern New Hampshire; both varieties occur along shores of ponds 

 and in bogs. 



M. pensylvanica Loisel. Bayberry. 



.Abundant shrub of coast, occasional inland, most outlying stations are Masun and 

 Alton ; sands, rocky areas, and banks. 



Comptonia peregrina ( L. ) Coult. Sweet-fern. 



Common and generally distributed at low elevations as far north as Alilan in Coos 

 County ; dry sandy or sterile areas. 



Juglans cinerea L. Butternut. 



Of general distribution, locally common at low elevations ; probably originallv in- 

 troduced over much of New Hamnshire, often along roads and near houses or cellars ; 

 indigenous when growing under forest conditions in Connecticut Valley and perhaps 

 indigenous in other parts of New Hampshire. 



Carya cordiformis (Wang.) Koch. Bitternut. 



Southern species, extending north in Connecticut Valley, where frequent, to Le- 

 banon, and north in Merrimack Valley to Hollis (rare) and into some of the town- 

 ships bordering Great Bav (occasional); banks and rockv slopes: Rhodora 48:206, 

 1946. 



C. ovata (Mill.) Koch. var. ovata. Shagbark-Hickory. 



Mostly absent as a forest tree from central New Hampshire, but occasionally 

 planted ; common in forests in southern parts of state at low elevations in dry, rich 

 woods ; strongly encouraged along roads or near houses for the edible nuts. 



\'ar. Nuttallii Sarg. 



Small-fruited state, mostly southern in distribution : specimens from Derry and 

 Mason have been so-called ; considering the very great differences in sizes and shapes 

 of nuts of C. ovata there might be some question as to the advisability of naming 

 one particular variant such as this. 



Var. pubescens Sarg. 



Specimen from Strafford County. 



The pignuts oi Gray's Manual ed. 8 include two species, C. (/labra (Mill.) Sweet 

 and C. oi'alis (Wang.) Sarg. The rather abundant pignuts of the Great Bay area 

 in Strafford and Rockinarham counties nossess a high degree of genetic diversity, 

 often combining traits of both so-called .snecies in one individual as was pointed 

 out by Hodgdon and Gansi, Rhodora 51:150-152, 1949. It would probably be 

 wiser to treat this ponulation as one soecies because of the free gene exchange 

 between its mem'bers. However, to conform to Gray's Manual we will here recognize 



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