Quercus alba L. White Oak. 



Mostly in dry woods but occasionally in more moist and rich areas, common at low- 

 elevations, extends north to Plymouth and Sandwich in central New Hampshire, 

 Bath in Connecticut Valley and Moultonborough and Madison in east central New- 

 Hampshire; the following forms may occur: forma I'lridis Trel, with leaves green 

 beneath is occasional; forma latUoba ( Sarg. ) Palmer & Steyermark with leaves 

 cut less than halfway to midrib is common; forma rcpaiida (Michx. ) Trel. -with 

 broad lobes and shallow sinuses probably is here but no specimens have been seen 

 from New Hampshire ; typical Q. alba with deeply cut leaves is common : Q. alba 

 may hybridize with Q. bicolor, Q. prinoidcs, and Q. Prinus, but no specimens are 

 known from New Hampshire. 



Q. robur L. English Oak. 



Rare -escape, Rindge : introduced from Europe. 



Q. macrocarpa Michx. Mossy-cup Oak. 



Specimens at Hall's Hill, Gilmanton ( Hodgdon & Leighton) on slope above 

 stream have the characteristic foliage of this species but, lacking fruits, may prove 

 to be aberrant Q. bicolor. 



0- bicolor VVilld. Swamp-White Oak. 



Sporadic and restricted to the southeastern part of New- Hampshire west to Man- 

 chester, Hooksett, and Nashua and northeast to Durham, in swamps and along 

 stream-margins. (The above mentioned specimen of "Q. macrocarpa" , if eventually 

 shown to be Q. bicolor, would considerably extend the range northward in New 

 Hampshire. ) 



Q. prinoides Willd. Dwarf Chestnut-Oak. 



In dry, sandy areas in southern New Hampshire; common in lower Merrimack 

 Valley north to Hooksett and eastward in southern Rockingham County to Derry ; 

 occurs also in WalpoFe in Connecticut Valley. 



Q. Prinus L. Chestnut-Oak. 



Dry, warm slopes in acid soils, mostly in extreme southern New Hampshire from 

 Winchester to Hudson; most northerly stations in Manchester, Nottingham, and 

 N^ewmarket, abundant in parts of southern Hillsboro County. 



Q. rubra L. var. rubra. Red Oak. 



Generally common throughout at low elevations, occasionally extending up to 2,5(JU 

 feet ; less common in extreme northern parts of state ; well drained soils. 



var. borealis (Michx. f) Earw. 



Limited field observations and the presence of herbarium specimens so labelled 

 show that this variety is generally distributed; in the absence of fruits on majority 

 of herbarium sheets it is impossible to separate much of the herbarium material 

 satisfactorily, however: Q. rubra may cross with both Q. cocciiica and 0. I'cliifiua. 

 but no specimens from New Hampshire have been seen. 



Q. coccinea Muench. Scarlet Oak. 



Mostly confined to central part of southern New Hampshire in dry, sandy soil, 

 where common; iremote outlying station on Rattlesnake Mountain in Holderness may 

 be of this species ; Q. coccinea is often confused with the slightly more northerly 

 Q. vclutina which, in some of its forms, has deeply cut leaves similar to those of 

 this species. 



Q. velutina Lam. Black Oak. 



Locally common in dry, often rich woods in southern New Hampshire extending 

 north to Plainfield and Gilmanton : trees with several quite difTerent leaf-shapes 

 occur: forma dilaniata Trel. with deeply cut leaves, and f. macrophylla (Dippel) 

 Trel. with leaves cut less than halfway to midrib being most common; typical Q. 

 vclutina with slightly lobed leaves (mostly a juvenile state), has been much less 

 collected; forma missouricnsis (Sarg.) Trel. with leaves permanently pubescent be- 

 neath should be sought for. 



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