BOTANICAL AUTHORITIES.

Atkins, C. G.Pinus Banksiana, Lamb[8]
Averill, C. K. [v]
Populus balsamifera, L.
(Rhodora, II, 35)[36]
Prunus Americana, Marsh.[123]
Quercus Muhlenbergii, Engelm.[84]
Bailey, L. H.Populus candicans, Ait.[37]
Bailey, W. W.Celtis occidentalis, L.[100]
Fraxinus Pennsylvanica, var.
lanceolata, Sarg.[166]
Bartram, WilliamQuercus tinctoria (1791)[89]
Batchelder, F. W.Betula nigra, L.[65]
Salix discolor, Muhl.
(Laconia, N. H.)[41]
Bates, J. A.Pinus Banksiana, Lamb[8]
Sassafras officinale, Nees[106]
Bishop, J. N.[v]
Celtis occidentalis, L.[100]
Fraxinus Pennsylvanica, Marsh.[164]
Fraxinus Pennsylvanica, var.lanceolata, Sarg.[166]
Juglans nigra, L. (in lit., 1896)[48]
Morus rubra, L.[102]
Populus heterophylla, L.[33]
Quercus Muhlenbergii, Engelm.[84]
Thuja occidentalis, L.[23]
Bissell, C. H.[v]
Cratægus Crus-Galli, L.[117]
Pinus sylvestris, L. (in lit., 1899)[12]
Prunus Americana, Marsh. (in lit., 1900)[123]
Rhus copallina[137]
Brainerd, EzraCarya porcina, Nutt.[53]
Cratægus punctata, Jacq.[118]
Ulmus racemosa, Thomas[99]
Brewster, WilliamPinus Banksiana, Lamb[8]
Britton, Nathaniel LordAcer Saccharum, var. nigrum[172]
Browne, D. T.Ilex opaca (Trees of North America, 1846)[139]
Bulletin Torrey Botanical Club,XVIII, 150
Pinus Banksiana, Lamb[8]
Chamberlain, E. B.Ulmus fulva, Michx. (1898)[97]
Churchill, J. R.Prunus Americana, Marsh.[123]
Collins, J. F.[v]
Gleditsia triacanthos, L.[129]
Dame. L. L.Cratægus Crus-Galli, L.[171]
Salix fragilis, L. (Typical Elms and other Trees of Massachusetts, p.85[44]
Day, F. M.Pinus Banksiana, Lamb[8]
Deane, WalterSassafras officinale, Nees (1895)[106]
Dudley, W. R.Populus heterophylla, L.[33]
Eggleston, W.W.Carya porcina, Nutt.[53]
Celtis occidentalis, L.[100]
Morus rubra, L.[102]
Platanus occidentalis, L.[110]
Populus deltoides, Marsh.[34]
Sassafras officinale, Nees.[106]
Ulmus racemosa, Thomas.[99]
Engler, Adolph[v]
Fernald, M. L.Fraxinus Pennsylvania, Marsh, var. lanceolata, Sarg. (in lit., Sept., 1901)[172]
Gleditsia triacanthos, L.[129]
Populus balsamifera, L. var. candicans,
Gray (Rhodora. III, 233)[171]
Salix balsamifera, Barratt.[171]
Salix discolor, Muhl. (in lit., Sept., 1901)[171]
FlaggMorus rubra, L.[102]
Flint, W. F.[v]
Acer Negundo, L.[151]
Quercus alba, L.[75]
Flora of VermontBetula lenta, L. (1900)[61]
Cratægus Crus-Galli, L. (1900)[117]
Fraxinus Pennsylvanica, Marsh. (1900)[164]
Picea nigra, Link (1900)[12]
Pinus rigida, Mill (1900)[6]
Populus deltoides, Marsh. (1900)[34]
Quercus alba, L. (1900)[75]
Furbish, Miss KateCratægus coccinea, L. (May, 1899)[119]
Pinus Banksiana, Lamb[8]
Goodale, G. L.Pinus Banksiana. Lamb[8]
GrantSassafras officinale, Nees[106]
Gray, AsaIlex opaca, Ait. (Manual of Botany, 6th ed.)[138]
Haines, Mrs.Pinus Banksiana, Lamb[8]
Harger, E. B.Picea nigra (Rhodora, II, 126)[13]
Harper, R. M.Liriodendron Tulipifera, L. (Rhodora II, 122)[104]
Harrington, A. K.Picea alba, Link[17]
Haskins, T. H.Ulmus racemosa, Thomas (Garden and Forest, V, 86)[99]
Holmes, Dr. EzekielNyssa sylvatica, Marsh[159]
Hosford, F. H.Cratægus mollis, Scheele[120]
Hoyt, Miss Fanny E.Pinus Banksiana, Lamb[8]
Humphrey, J. E.Picea alba, Link[17]
Quercus palustris, Du Roi (Amherst Trees)[91]
Jack, J. G.Cratægus coccinea, L. (1899-1900)[119]
Jessup, Henry GriswoldCarya amara, Nutt[55]
Ulmus racemosa, Thomas99
Josselyn, JohnSassafras officinale, Nees (New England Rarities, 1672)[106]
Knowlton, C. H.Pinus rigida, Mill. (Rhodora, II, 124)[6]
Manning, Warren H.[vi]
Matthews, F. SchuylerMorus rubra. L.[102]
Michaux, fils, François AndréUlmus fulva (Sylva of North America, III, ed. 1853)[97]
Morris, E. L.[v]
Morss, Charles H.[vi]
Oakes, WilliamMorus rubra, L.[102]
Parlin, J. C.Sassafras officinale, Nees (1896)[106]
Prantl, Karl von[v]
Pringle, C. G.Pinus Banksiana, Lamb[8]
Pyrus sambucifolia, Cham. & Schlecht[113]
Quercus Muhlenbergii, Engelm[84]
Rand, E. L.Pinus Banksiana[8]
Rhodora, III, 234Acer Saccharum, Marsh., var. barbatum, Trelease[172]
Acer Saccharum, Marsh., var. nigrum, Britton[172]
Rhodora, III, 58Ilex opaca, Ait.[139]
Rhodora, III, 234Prunus Americana, Marsh[171]
Robbins, James W.Sassafras officinale, Nees[106]
Ulmus racemosa, Thomas[99]
Robinson, Dr. B. L.[vi]
Robinson, JohnCratægus coccinea, L. (1900)[119]
Robinson, R. E.Pinus Banksiana, Lamb[8]
Russell, L. W.Quercus palustris, Du Roi[92]
Quercus stellata. Wang[77]
Sargent, Charles S.Cratægus coccinea, L. (Botanical Gazette, XXXI, 12, 1901, by permission)[119]
Cratægus mollis, Scheele (Botanical Gazette. XXXI, 7, 223, 1901)[121]
Setchell, W. A.Populus heterophylla. L.[33]
Stone, W. E.Quercus palustris. Du Roi (Bull. Torr. Club, IX, 57)[91]
Swan, Dr. C. W.[vi]
Terry, Mrs. Emily H.Picea alba. Link[17]
Trelease, WilliamAcer Saccharum, Marsh., var. barbatum[172]
Tuckerman, EdwardBetula papyrifera, var. minor, Marsh.[68]
Waghorne, A. C.Cratægus coccinea, L. (1894)[119]

ABBREVIATIONS.

Ait.--Aiton, William.
Barratt, Joseph.
B. S. P.--Britton, Nathaniel Lord, Sterns, E. E., and Poggenburg, Justus F.
Borkh.--Borkhausen, M. B.
Carr.--Carrière, Éli Abel.
Cham.--Chamisso, Adelbert von.
Coulter, John Merle.
DC.--DeCandolle, Augustin Pyramus.
Desf.--Desfontaines, René Louiche.
Du Roi, Johann Philip.
Ehrh.--Ehrhart, Friedrich.
Engelm.--Engelmann, George.
Gray, Asa.
Jacq.--Jacquin, Nicholaus Joseph.
Karst.--Karsten, Hermann Gustav Karl Wilhelm.
Koch, Wilhelm Daniel Joseph.
L.--Linnæus, Carolus.
L. f.--Linnæus, fils, Carl von.
Lam.--Lamarck, J. B. P. A. de Monet.
Lamb, Aylmer Bourke.
Link, Heinrich Friedrich.
Marsh.--Marshall, Humphrey.
Medic.--Medicus, Friedrich Casimir.
Michx.--Michaux, André.
Michaux, fils.--François André.
Mill.--Miller, Philip.
Moench, Konrad.
Muhl.--Muhlenberg, H. Ernst.
Nees--Nees von Esenbeck, C. G.
Nutt.--Nuttall, Thomas.
Peck, Charles H.
Poggenburg, Justus F.
Pursh, Friedrich Trangott.
Roem.--Roemer, Johann Jacob.
Sarg.--Sargent, Charles S.
Scheele, A.
Schlecht--Schlechtendal, D. F. L. von.
Schr.--Schrader, Heinrich A.
Spach, Eduard.
Sterns, E. E.
Sudw.--Sudworth, George B.
Sweet, Robert.
T. and G.--Torrey, John, and Gray, Asa.
Thomas, David.
Vent.--Ventenat, Étienne Pierre.
Walt.--Walter, Thomas.
Wang.--Wangenheim, F. A. J. von.
Watson, Sereno.
Waugh, Frank A.
Willd.--Willdenow, Carl Ludwig.

TREES OF NEW ENGLAND.