Rothrock.] J--»-^ [March 2, 



2 Celtis occidentalis L Hackberry, nettle tree. 



2 Moras rubra L Red mulberry. 



2 Platanus occidentalis L Bultonwood, sycamore. 



2 Juglans cinerea L Butternut, white walnut. 



1 Juglans nigra L Black walnut. 



1 Carya alba Nutt Shellbark, or shagbark .hickory. 



2 Carya sulcata Nutt Big shellbark, king nut. 



1 Carya tomentosa Nutt White-heart hickory, mocker nut. 



1 Carya porcina Nutt Pig-nut, or broom hickory. 



2 Carya amara Nutt Swamp hickory, or bitternut. 



2 Belula lenta L Cherry, sweet, or black birch. 



2 Betula lutea Michx. f Yellow, or gray birch. 



2 Betula populifolia Ait White birch. 



2 Betula papyrifera Marshall Paper, or canoe birch. 



2 Betula nigra L Red, or river birch. 



3 Ostrya Virginica Willd Hop-hornbeam, leverwood. 



3 Carpinus Caroliniana Walter Hornbeam, blue, or water beach. 



1 Quercus alba L White oak. 



2 Quercus stellata Wang Post, or iron oak. 



2 Quercus macrocarpa Michx Bur oak, overcup oak. 



2 Quercus bicolor Willd Swamp white oak. 



1 Quercus Prinus L Chestnut oak, rock chestnut oak. 



1 Quercus jMuhlenbergii Engelm Yellow oak, chestnut oak. 



1 Quercus rubra L Red oak. 



1 Quercus coccinea Wang Scarlet oak. 



1 Quercus coccinea var. tinctoria Gray. Black, or yellow-barked oak. 



2 Quercus palustris Du Roi Swamp, or pin oak. 



3 Quercus falcata Michx Spanish oak. 



3 Quercus nigra L Black jack, or barren oak. 



3 Quercus imbricaria Michx Laurel oak, shingle oak. 



3 Quercus Phellos L Willow oak. 



1 Castanea sativa Mill. var. Americana 



Gray Chestnut. 



3 Castanea pumila Mill Chinquapin. 



2 Fagus ferruginea Ait Beech. 



There appears to be no native willow of sufficient importance to merit 

 a place in this list. 



1 Pinus Strobus L .White pine. 



1 Pinus rigida Miller Pitch pine. 



Under the pitch pine the Pennsylvania lumberman groups what he 

 recognizes as yellow and jack pine. 



2 Pinus pungeus Michx., f Prickly pine, poverty pine, table 



mountain pine. 

 2 Pinus inops Ait Jersey, or scrub pine. 



